Biomedical subjects

Melissa M Hudson

Publications and source records attributed to Melissa M Hudson.

At least 19 recordsLinked to original sources

PubMed2026

Integrating genetic predictors into subsequent breast cancer risk prediction in survivors of childhood cancer.

PURPOSE: Female survivors of childhood cancer are at high risk for developing breast cancer. The contributions of most general population primary breast cancer genetic predictors to this risk have not been explored. METHODS: Analyses included females who survived ≥5 years after their childhood cancer diagnosis with available array (N = 2096, subsequent breast cancer [SBC]=218) or whole-genome sequencing (WGS; N = 3292, SBC=101) data from the Childhood Cancer Survivor Study and St. Jude Lifetime Cohort. We computed 99 externally-validated primary breast cancer polygenic risk scores (PRS). Using deep-coverage WGS, ClinVar-annotated pathogenic/likely pathogenic (P/LP) variants in breast cancer susceptibility genes were identified. Cox proportional hazards models assessed associations with SBC risk, adjusting for treatments and genetic ancestry. RESULTS: Among 5388 female survivors (genetic ancestry, European: N = 4,752; African: N = 444; East Asian: N = 192), 319 developed SBC. Most (90.9%) PRSs were nominally associated with SBC risk (P < 0.05), but effect sizes varied substantially. PRSs with superior discriminatory ability had greater genome-wide coverage (e.g., 6.4 million-variant PRS, HR per SD = 1.71, 95% CI = 1.43 to 2.05; P = 4.2x10-9) and 7.7-fold higher odds (P = 7.0x10-4) of including variants in multiple DNA damage repair pathways compared with PRSs with weaker risk associations. Among survivors with WGS, 1.6% carried P/LP variants in clinical testing panel genes, which was associated with a 7.4-fold greater risk (95% CI = 3.16 to 17.19). Including genetic factors improved SBC risk prediction by age 40 (P < 0.001) compared to treatment exposures alone. CONCLUSIONS: Externally-validated primary breast cancer genetic susceptibility predictors are relevant for SBC risk prediction and should be prioritized for risk stratification in survivors.

Journal Article↗

PubMed2007

Cisplatin-induced hypomagnesemia and cardiac dysrhythmia.

We describe a case of a patient with cisplatin-induced hypomagnesemia who suffered brief asystole during an episode of gastroenteritis. Structural heart disease was excluded. The patient achieved complete clinical recovery after short-term administration of intravenous magnesium supplementation. Cisplatin should be considered a cause of hypomagnesemic-related cardiac dysrhythmia. Magnesium deficit may increase myocardial electrical instability and thus, the risk of life-threatening arrhythmias and sudden death. Long-term serum electrolyte measurement and appropriate replacement of magnesium are recommended.

Adult↗

PubMed2007

Attitudes and practices of pediatric oncology providers regarding fertility issues.

PURPOSE: Given the higher survival rates of childhood cancer, health care providers must be aware of the side effects of cancer therapies to educate patients and provide appropriate interventions to reduce cancer-related morbidity. To understand the current practices and attitudes in a pediatric hematology/oncology clinic, health care providers were surveyed regarding fertility issues pertinent to their patient care. PARTICIPANTS AND INSTRUMENTS: In this study, 93.8% (30/32) health care providers in one pediatric hematology/oncology department completed a 44-item survey assessing knowledge, current practices, obstacles to current practices, perceptions of patient differences, and improvements to future practice. RESULTS: The majority of health care providers were aware of the adverse effects of alkylating agents (90.7%) and of abdominal and pelvic radiation (100.0%) on fertility. However, only half were aware of gender differences in gonadotoxicity (50.0%) or knowledgeable of current research and technology in fertility preservation (53.3%). While only 34.6% of providers currently consulted with specialists, nearly all (92.8%) indicated a desire to do so in the future, but 64.3% indicated difficulties in finding proper facilities and specialists for their patients. Almost all (96.6%) agreed that providers and patient families need more information regarding the effects of cancer therapy on fertility. CONCLUSIONS: Surveyed pediatric oncology providers considered fertility to be an important issue for childhood cancer patients and desired more resources regarding effects on fertility and fertility preservation. Greater communication needs to be established between pediatric oncology providers and specialists in reproductive medicine and endocrinology to ensure adequate professional collaboration and patient referrals.

Adolescent↗

PubMed2007

Comparison of treatment outcomes of childhood Hodgkin lymphoma in two US centers and a center in Recife, Brazil.

BACKGROUND: Pediatric Hodgkin lymphoma (HL) has a cure rate of more than 80% in high-income countries (HIC). However, more than 80% of the world's children live in low-income countries (LIC), where the cure rate is often much lower. PROCEDURE: We compared the outcome of HL of 371 patients treated at two pediatric oncology centers in the US to that of 62 patients treated at one center in Recife, Brazil (IMIP) to determine whether the same treatment strategy should be used in both high-income and LIC. The logrank test was used to compare event-free and overall survival. RESULTS: The percentages of patients with unfavorable disease at each center were similar (P = 0.72). Patients with favorable disease at IMIP had estimated 5-year survival rates comparable to those of the US centers (100% and 99%, respectively). Among patients with unfavorable disease, those treated at IMIP had a 5-year event-free survival (EFS) rate of 60%, compared to 78% at the US centers; (P = 0.08). The 5-year survival estimate after relapse was 25% at IMIP versus 61% at the US centers (P = 0.08). The 5-year overall survival for patients with unfavorable disease was 72% at IMIP versus 90% at the US centers (P = 0.01). CONCLUSIONS: Intensive frontline therapy should be considered for patients with unfavorable HL in LIC where the relapse rate is high and the salvage rate is low, provided that supportive care is adequate.

Adolescent↗

PubMed2006

White race as a risk factor for hypothyroidism after treatment for pediatric Hodgkin's lymphoma.

PURPOSE: Hypothyroidism frequently occurs after treatment for pediatric Hodgkin's lymphoma, but race has not been investigated as a risk factor for this delayed toxicity. The aim of this study was to determine whether race is an independent risk factor for hypothyroidism in survivors of pediatric Hodgkin's lymphoma. PATIENTS AND METHODS: To identify differences between black and white patients in the development of hypothyroidism after treatment for Hodgkin's lymphoma, we conducted a retrospective study of consecutively treated pediatric patients with newly diagnosed Hodgkin's lymphoma treated at St Jude Children's Research Hospital (Memphis, TN) from January 1980 through December 2002. Clinical or biochemical hypothyroidism was defined by an above normal thyroxine-stimulating hormone concentration or by the need for thyroid hormone replacement therapy. RESULTS: The 461 patients (388 white patients, 73 black patients) where followed for a median of 11.3 years (range, 1.8 to 24.9 years). Hypothyroidism developed in 196 (43%) of 461 patients after a median of 2.9 years (range, 0.7 to 11.3 years) after diagnosis of Hodgkin's lymphoma. Hypothyroidism developed in 47% of white patients but in only 21% of black patients (hazard ratio = 2.7; 95% CI, 1.6 to 4.6). After adjusting for other risk factors for hypothyroidism (thyroid radiation dose, sex, and nodular sclerosis histology), the risk of hypothyroidism in white patients was 2.5 times (95% CI, 1.5 to 4.3 times) the risk in black patients (P < .001). CONCLUSION: White patients have a higher risk of hypothyroidism after neck irradiation for pediatric Hodgkin's lymphoma than black patients.

Adolescent↗

PubMed2006

Predicting and modifying substance use in childhood cancer survivors: application of a conceptual model.

PURPOSE/OBJECTIVES: To identify factors that predict or modify substance use in childhood cancer survivors and to describe how a risk-counseling intervention reduced young survivors' substance use. DESIGN: Secondary analysis of clinical trial data and primary analysis of medical record data. SETTING: Outpatient clinic. SAMPLE: 149 females and 118 males 12-18 years of age whose cancer had been in remission for at least two years were randomly assigned to intervention (n = 132) and standard care (n = 135) groups. METHODS: Self-report questionnaires, abstracted medical record data, confirmatory factor analysis, and structural equation modeling. MAIN RESEARCH VARIABLES: Smoking, alcohol consumption, knowledge, risk perceptions, motivation, and worry about cancer and treatment effects. FINDINGS: Three factors directly predicted substance use at baseline: being in a higher grade in school (independent of age), feelings of being more susceptible to late effects of cancer therapy, and worrying more about cancer and its treatment. At follow-up a year later, grade in school and worry predicted increased substance use. In addition, a desire to change health behavior, influenced by the intervention and gender, predicted decreased substance use. The mechanism of influence of the intervention was evident: The intervention led to a need to change, which precipitated a desire to change and ultimately resulted in decreased substance use. CONCLUSIONS: Young survivors' worries and concerns about their cancer and treatment-related late effects are a new intervention target. Motivation is sensitive to behavioral change interventions and positively affects risk reduction. IMPLICATIONS FOR NURSING: Two new intervention strategies to address the impact of survivors' concerns about their cancer and its treatment are implied: (a) Replace substance use with new coping methods to reduce fear and anxiety, and (b) tailor motivation-based interventions to age and gender to communicate graphically and realistically to survivors the personal importance of behavioral change in modifying the risks of late effects.

Adolescent↗

PubMed2006

Natural history of thyroid nodules in survivors of pediatric Hodgkin lymphoma.

BACKGROUND: Survivors of Hodgkin lymphoma and other patients who receive neck irradiation are at increased risk of thyroid cancer. Ultrasonography provides an inexpensive and non-invasive method of thyroid screening, but the clinical significance of thyroid nodules detected by ultrasound screening is uncertain. PROCEDURE: We reviewed the demographics, clinical characteristics, method of detection, and outcome of patients who developed thyroid nodules after treatment for pediatric Hodgkin lymphoma at our institution. One radiologist reviewed all imaging studies. RESULTS: Sixty-seven children treated for Hodgkin lymphoma from 1962 to 2001 developed thyroid nodules. The study group represented 9,024 person-years of follow-up after the diagnosis of Hodgkin lymphoma and 581 person-years after diagnosis of a thyroid nodule. A median of 10.5 years (range, 0.2-24.8 years) elapsed between the diagnoses of Hodgkin lymphoma and thyroid nodule(s). All but one patient had received neck irradiation for Hodgkin lymphoma, with a median thyroid radiation dose of 35 Gy (range, 12-45 Gy). Thyroid nodules were found to be malignant in seven patients (10%), at a median of 16.2 years (range, 8.4-23.7 years) after diagnosis of Hodgkin lymphoma. Only one malignancy was found through screening ultrasonography. All patients with thyroid cancer remained disease-free at 0.4-16.2 years of follow-up. CONCLUSIONS: Thyroid nodules are common in Hodgkin lymphoma survivors treated with neck irradiation, but the majority of these lesions have an indolent clinical course and do not undergo malignant transformation. Only patients with a palpable mass or clinical symptoms need more extensive evaluation, including Doppler-flow ultrasonography and fine-needle aspiration.

Disease-Free Survival↗

PubMed2006

Changes in bone mineral density in survivors of childhood acute lymphoblastic leukemia.

BACKGROUND: There is little information about factors modulating bone mineral density (BMD) in survivors of childhood acute lymphoblastic leukemia (ALL). PROCEDURE: We analyzed data from 57 survivors (26 male, 52 Caucasian) who underwent two serial quantitative computed tomography (QCT) studies of BMD. Using multiple linear regression, we evaluated the association of BMD change with demographic variables, treatment history, hormone therapy, exercise, and tobacco and alcohol use. RESULTS: The median age was 3.4 years (range, 0.9-17.4 years) at diagnosis of ALL; the median age at the first QCT (Study I) was 15.0 years (range, 10.6-31.0 years) and at the second QCT (Study II) was 18.2 years (range, 14.2-35.3 years). Mean height increased 4.7 cm and mean weight increased 8.8 kg between Studies I and II. While the mean BMD increased 9.33 mg/cc (P = 0.003), the BMD Z-score increased only slightly (0.21 SD, P = 0.035). Cortical bone density increased significantly (approximately 25.3 mg/cc; P = 0.001), but the ratio of trabecular to cortical BMD decreased significantly (P = 0.045). Factors independently associated with unfavorable BMD changes included older age at diagnosis (P = 0.001), female sex (P = 0.018), and nutritional supplementation (0.032). Alcohol (P = 0.009) was an unfavorable factor in a univariable analysis. CONCLUSIONS: Bone mineral accretion during adolescence is attenuated in childhood ALL survivors by a comparative deficit in trabecular versus cortical bone deposition. BMD is influenced favorably by exercise in early adolescence and unfavorably by the use of nutritional supplements and alcohol. These results provide new information about behavioral factors that affect bone accrual in survivors of childhood ALL and warrant definitive evaluation in a larger cohort.

Adolescent↗

PubMed2006

Long-term follow-up of pediatric cancer survivors: education, surveillance, and screening.

Cancer and its treatment predispose childhood cancer survivors to chronic or late occurring health problems that may not become clinically significant until many years after therapy. Frequently, long-term survivors of childhood cancer report late cancer-related effects that diminish quality of life and increase the risk of early mortality. Risk-based health care that involves a personalized plan for surveillance, screening, and prevention is recommended to reduce cancer-related morbidity in childhood cancer survivors. To implement optimal risk-based care, the survivor and health care provider must have accurate information about cancer diagnosis, treatment modalities, and potential cancer-related health risks to guide screening and risk-reducing interventions. However, previous studies evaluating health knowledge of childhood cancer survivors demonstrate noteworthy deficits and misperceptions about their cancer diagnosis, treatment, and cancer-related health risks. In addition, because of the relative rarity of childhood cancer, many health care providers lack familiarity with cancer-related health risks and risk-reduction methods relevant for this population. To correct these deficits, the Scottish Intercollegiate Guidelines Network (SIGN) and the Children's Oncology Group (COG) developed clinical practice guidelines to foster appropriate risk-based survivor care. Herein, we discuss the development, benefits, and limitations of the SIGN and COG guidelines and the foundation they provide for standardizing long-term follow-up care of the ever-growing vulnerable population of childhood cancer survivors.

Adolescent↗

PubMed2006

Achieving cure for early stage pediatric Hodgkin disease with minimal morbidity: are we there yet?

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Adolescent↗

PubMed2006

Itraconazole-enhanced chemotherapy toxicity in a patient with Hodgkin lymphoma.

The authors describe the clinical course of a boy with Hodgkin lymphoma who developed severe myelosuppression and neurotoxicity after the concurrent administration of vinblastine, doxorubicin, methotrexate, and prednisone chemotherapy (VAMP) and itraconazole. Several case reports have identified itraconazole-enhanced chemotherapy toxicity, especially in association with vinca alkaloid chemotherapy. This patient showed similar exacerbation of chemotherapy toxicity related to concurrent administration of itraconazole and vinblastine, doxorubicin, and methotrexate. Inpatient supportive management along with withdrawal of offending drugs resulted in the resolution of myelotoxic and neurotoxic manifestations. Hepatic cytochrome P450 enzyme inhibition and P-glycoprotein pump inhibitors are believed to interfere with the metabolism of several anticancer agents. Appropriate care should be exercised when combining cancer chemotherapy with cytochrome P450 and P-glycoprotein inhibitors, such as itraconazole.

Adolescent↗

PubMed2005

A model for care across the cancer continuum.

With contemporary therapy, the majority of children and adolescents who are diagnosed with cancer will be cured. However, curative therapy predisposes to adverse health outcomes that affect the long-term survivor's quality of life and increase the risk of early mortality. Recognition of the adverse effects of cancer treatment on growth and development, vital organ function, fertility and reproduction, and secondary carcinogenesis has been the stimulus for the development of risk-adapted treatment approaches for pediatric malignancies. Because the consequences of these therapeutic modifications may not manifest for many years, long-term follow-up is required to accurately define new or changing patterns of adverse health outcomes, appropriate screening approaches, and ultimately, risk-reducing interventions. Identification of vulnerable survivors is essential to provide timely interventions to detect, ameliorate, reduce, or prevent cancer-related sequelae. This process is challenging, because risk factors constantly are evolving as cancer therapies are modified and as survivors age. Aging also disrupts the continuity of after-cancer care, as adolescent and young adult survivors graduate from pediatric oncology practices to community medical providers who are largely unfamiliar with cancer-related health risks. Health outcomes research objectives that target cancer survivors must adapt as cancer therapies evolve and as new risk factors for cancer-related morbidity emerge. Prospectively using a multidimensional, comprehensive approach that considers host-related, cancer-related, genetic, and lifestyle factors in combination with results from focused medical and behavioral evaluations obtained from cancer survivors who participate in long-term follow-up programs provides an optimal method of defining high-risk profiles for adverse health outcomes across the age spectrum.

Adolescent↗

PubMed2005

Patterns of treatment failure in pediatric and young adult patients with Hodgkin's disease: local disease control with combined-modality therapy.

PURPOSE: Refinement in managing pediatric Hodgkin's disease (HD) requires understanding of factors associated with local treatment failure. This study defines the cumulative incidence (CI) of local failure (LF) and prognostic factors for pediatric patients treated for HD with combined-modality therapy (CMT). PATIENTS AND METHODS: We enrolled 195 patients onto two prospective studies at St Jude Children's Research Hospital between 1990 and 2000. Patients received CMT with chemotherapy (vinblastine, doxorubicin, methotrexate, and prednisone [VAMP]; vinblastine, etoposide, prednisone, and doxorubicin; or VAMP/cyclophosphamide, vincristine, and procarbazine) and involved-field radiation therapy delivered to initial site(s) of disease on the basis of early response. Sites of disease involvement, treatment, and sites of failure were confirmed from the patients' medical record, imaging, and radiotherapy treatment records. We estimated the overall survival, event-free survival, and CI of LF. RESULTS: With a median follow-up of 7.6 years, the CI of LF was 10.9% and 11.6% at 5 and 10 years, respectively. Twenty-seven (14%) of 195 patients experienced recurrence of HD, and 22 (81%) of those experienced LF. Bulky mediastinal disease greater than one third transthoracic diameter predicted a higher incidence of LF, but did not predict failure in the mediastinum. Male sex, low initial hemoglobin, and bulky mediastinal disease were prognostic indicators of LF. Attenuation of radiation dose to 15 Gy based on response provides excellent infield control. CONCLUSION: CMT provides excellent local disease control in children and young adults with HD. LF remains a primary site of disease recurrence, with male sex, low initial hemoglobin, and bulky mediastinal disease predicting for LF.

Adolescent↗

PubMed2005

Creating the basis for a breast health program for female survivors of Hodgkin disease using a participatory research approach.

PURPOSE/OBJECTIVES: To learn from female survivors of Hodgkin disease about their perceptions of their current health status and future health risks, self-care practices to prevent or diminish health risks, and what kind of breast health program could benefit them, including the most effective methods and optimal times for learning about breast health. DESIGN: Participatory research using focus groups. SETTING: Urban pediatric cancer center. SAMPLE: 1 African American and 19 Caucasian female survivors of Hodgkin disease aged 16-26 years, diagnosed at least two years before the start of the study, and treated with mantle radiation therapy. Participants were recruited during visits to an outpatient clinic. METHODS: Six open-ended questions were asked during three separate focus group sessions. Transcribed data were evaluated by content analysis techniques and analyzed to identify common themes. MAIN RESEARCH VARIABLES: Current health status and perceived health risks, current health practices, and effective methods and timing for breast health teaching. FINDINGS: Survivors reported feeling damaged by their cancer and its treatment and perceived that they were at risk for breast cancer. Self-care and risky behaviors also were reported. Internal influences (e.g., fear) and external influences (e.g., family) motivated survivors to participate in health promotion activities. Effective methods identified for learning about breast health included having access to other survivors, being respected as an adult, and having one-on-one staff teaching and peer support. The preferred timing of teaching varied, but survivors generally supported a gradual provision of information. CONCLUSIONS: A positive listening environment is important for developing a breast health program for survivors. An essential first step is to create an opportunity for survivors to tell about their experiences with cancer, including its impact on their lives. Information regarding breast health must be provided in multiple formats during and after treatment if good practices are to be undertaken. IMPLICATIONS FOR NURSING: The provision of adequate information during and after therapy as well as peer counseling in a positive listening environment are important in helping survivors participate in health promotion activities.

Adolescent↗

PubMed2005

Limitations on physical performance and daily activities among long-term survivors of childhood cancer.

BACKGROUND: Survivors of childhood cancer may experience important disease- and treatment-related late effects, including functional limitations. OBJECTIVE: This study evaluated performance limitations and restricted abilities to participate in personal care, to engage in routine activities like shopping or housework, and to attend work or school (participation restrictions) in a cohort of survivors of childhood cancer. SETTING: Epidemiologic survey and 26 institutions that treat childhood cancer. PATIENTS: Participants included 11 481 persons who were treated for primary brain cancer, leukemia, Hodgkin disease, non-Hodgkin lymphoma, kidney tumor, neuroblastoma, soft-tissue sarcoma, or malignant bone tumor before the age of 21 years and who survived at least 5 years after diagnosis. The comparison group included 3839 siblings of survivors of childhood cancer. MEASUREMENT: Medical data were abstracted, and participants or parents (if the participants were <18 years of age at survey completion) completed a 24-page questionnaire. RESULTS: Compared with siblings, survivors were more likely to report performance limitations (risk ratio, 1.8 [95% CI, 1.7 to 2.0]) and to report restricted participation in personal care skills (risk ratio, 4.7 [CI, 3.0 to 7.2]), routine activities (risk ratio, 4.7 [CI, 3.6 to 6.2]), and the ability to attend work or school (risk ratio, 5.9 [CI, 4.5 to 7.6]). Survivors of brain (26.6%) and bone (36.9%) cancer were most likely to report performance limitations, restricted ability to do routine activities (20.9% and 8.5%, respectively), and restricted ability to attend work or school (20.0% and 11.2%, respectively). Survivors of brain cancer were also most likely to report restricted abilities to perform personal care (10.5%). LIMITATIONS: There was the potential for participants to be healthier or more physically capable than nonparticipants or for persons to be more motivated to participate in this study if they had functional deficits. In addition, the nature of the questionnaire did not allow specific physical limitations to be measured. CONCLUSION: Long-term survivors of childhood cancer are at increased risk for functional limitations in physical performance and in participation in activities needed for daily living.

Absenteeism↗

PubMed2005

Late effects of pelvic rhabdomyosarcoma and its treatment in female survivors.

PURPOSE: To document the spectrum and severity of late effects in female survivors of pelvic rhabdomyosarcoma. PATIENTS AND METHODS: We reviewed the demographic, diagnostic, treatment, and outcome data of the 26 females treated for pelvic rhabdomyosarcoma at our institution between March 1962 and December 1996 who survived free of disease for 5 or more years. Adverse effects that occurred 5 or more years after diagnosis were graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events, version 3.0. RESULTS: The most common tumor sites were vagina (n = 7), pelvis/retroperitoneum (n = 6), and bladder (n = 4). All patients received chemotherapy (alkylating agent, n = 23; doxorubicin, n = 16); 22 received radiotherapy (median dose, 46 Gy). Median follow-up of the 23 survivors was 20.3 years. Late effects occurred in 24 patients, 23 of whom had grade 3/4 late effects (median grade 3/4 late effects per patient, three; range, zero to 14). Fourteen patients (54%) required surgery for late complications. The 22 patients who had received radiotherapy had a greater median number of late effects per patient than did the remaining four (9.5 v one; P = .002). The median number of late effects per patient was higher in the 12 patients treated during or after 1984 than in the 14 treated earlier (12.5 v 6.5; P = .041). CONCLUSION: The burden of late effects in girls treated for pelvic rhabdomyosarcoma is significant and does not seem to be diminishing with advances in treatment. Prospective studies are needed to better assess the impact of these late effects on quality of life and functional outcome, and to refine the treatment approach to pelvic rhabdomyosarcoma.

Adolescent↗

PubMed2005

Minority adult survivors of childhood cancer: a comparison of long-term outcomes, health care utilization, and health-related behaviors from the childhood cancer survivor study.

PURPOSE: To determine the influence of race/ethnicity on outcomes in the Childhood Cancer Survivor Study (CCSS). PATIENTS AND METHODS: Of CCSS adult survivors in the United States, 443 (4.9%) were black, 503 (5.6%) were Hispanic and 7,821 (86.6%) were white. Mean age at interview, 26.9 years (range, 18 to 48 years); mean follow-up, 17.2 years (range, 8.7 to 28.4 years). Late mortality, second malignancy (SMN) rates, health care utilization, and health status and behaviors were assessed for blacks and Hispanics and compared with white survivors. RESULTS: Late mortality rate (6.5%) and 15-year cumulative incidence of SMN (3.5%) were similar across racial/ethnic groups. Minority survivors were more likely to have lower socioeconomic status (SES); final models were adjusted for income, education, and health insurance. Although overall health status was similar, black survivors were less likely to report adverse mental health (females: odds ratio [OR], 0.6; 95% CI, 0.4 to 0.9; males: OR, 0.5; 95% CI, 0.3 to 0.8). Differences in health care utilization and behaviors noted: Hispanic survivors were more likely to report a cancer center visit (females: OR, 1.5; 95% CI, 1.1 to 2.0; males: OR, 1.7; 95% CI, 1.2 to 2.3); black females were more likely (OR, 1.6; 95% CI, 1.1 to 2.4), and Hispanic females less likely to have a recent Pap smear (OR, 0.7; 95% CI, 0.5 to 1.0); black and Hispanic survivors were less likely to report smoking; black survivors were less likely to report problem drinking. CONCLUSION: Adjusted for SES, adverse outcomes in CCSS were not associated with minority status. Importantly, black survivors reported less risky behaviors and better preventive practices. Hispanic survivors had equitable access to cancer related care.

Adolescent↗

PubMed2005

Stroke as a late treatment effect of Hodgkin's Disease: a report from the Childhood Cancer Survivor Study.

PURPOSE: The objectives of this report are to examine the incidence of and risk factors for stroke among childhood Hodgkin's disease (HD) survivors. PATIENTS AND METHODS: The Childhood Cancer Survivor Study is a multi-institutional cohort study of more than 5-year cancer survivors diagnosed between 1970 and 1986 and a sibling comparison group. Incidence rates of stroke among HD survivors (n = 1,926) and siblings (n = 3,846) were calculated and compared. Cox proportional hazards models were used to estimate the hazard ratios, reported as relative risks (RR), of developing stroke between HD survivors and siblings. RESULTS: Nine siblings reported a stroke, for an incidence of 8.00 per 100,000 person-years (95% CI, 3.85 to 14.43 per 100,000 person-years). Twenty-four HD survivors reported a stroke. The incidence of late-occurring stroke among HD survivors was 83.6 per 100,000 person-years (95% CI, 54.5 to 121.7 per 100,000 person-years). The RR of stroke among HD survivors was 4.32 (95% CI, 2.01 to 9.29; P = .0002). All 24 survivors received mantle radiation exposure (median dose, 40 Gy). The incidence of late-occurring stroke among HD survivors treated with mantle radiation was 109.8 per 100,000 person-years (95% CI, 70.8 to 161.1 per 100,000 person-years). The RR of late-occurring stroke among HD survivors treated with mantle radiation was 5.62 (95% CI, 2.59 to 12.25; P < .0001). CONCLUSION: Survivors of childhood HD are at increased risk of stroke. Mantle radiation exposure is strongly associated with subsequent stroke. Potential mechanisms may include carotid artery disease or cardiac valvular disease.

Adolescent↗