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Biomedical subjects

D M Hays

Publications and source records attributed to D M Hays.

At least 55 records · Page 3Linked to original sources

Postsplenectomy sepsis and other complications following staging laparotomy for Hodgkin's disease in childhood.

This is a survey of 234 pediatric patients in whom staging laparotomy/splenectomy was carried out (1975 to 1981) in the course of the Intergroup Hodgkin's Disease in Childhood Study (IHDCS). Relapse has occurred in 44 of these patients, and 12 have died, 7 secondary to extension of lymphoma, 2 with herpes or pneumocystis infections, 2 with leukemia, and 1 from an unrelated accident. During the period of surveillance (mean 5.5 yr), five episodes of bacterial sepsis (positive blood cultures) have occurred, including two due to Streptococcus pneumoniae; and three, to Hemophilus influenzae. The former occurred in the small group of patients in this series who had not received the prescribed pneumococcal vaccination. No fatalities were associated with these septic episodes. Intestinal obstruction secondary to adhesions (benign) occurred in eight patients and was managed without intestinal resection or mortality. One patient required operative release of an obstructed ureter following laparotomy, and one, oophorectomy for an infarcted (transposed) ovary.

Adolescent↗

Soft tissue sarcomas arising in the retroperitoneal space in children. A report from the Intergroup Rhabdomyosarcoma Study (IRS) Committee.

One hundred one eligible children with soft-tissue sarcomas arising within the retroperitoneal space have been registered on Intergroup Rhabdomyosarcoma Study Committee (IRS) studies I and II and followed for at least 2 years or until death. The most common presenting symptoms and signs were pain in the abdomen or lower extremities, and/or an abdominal mass, usually noted by a parent or a physician seeing the child for other complaints. The median age at diagnosis was 6.5 years and the sex ratio (M/F) 1.7:1. Histologic types were embryonal or botryoid rhabdomyosarcoma (RMS) in 58 patients, alveolar RMS in 8, pleomorphic RMS in 2, undifferentiated sarcoma in 20, extraosseous Ewing's sarcoma in 4 and unspecified sarcoma in 9. Median tumor size was 10 cm, significantly larger than the 7.5 cm noted in the IRS studies as a whole (P less than 0.05). One patient had complete tumor removal (Group I); 12 had grossly complete removal with microscopic residual tumor (Group II). Fifty-one patients had residual local tumor after biopsy or partial resection (Group III) and 37 patients had distant metastases at diagnosis (Group IV). Treatment included surgery, radiation therapy (RT) and combination chemotherapy with vincristine and actinomycin D with or without cyclophosphamide and Adriamycin (doxorubicin) according to protocol. Thirty-nine of 99 patients (39%) had major difficulties in the delivery of specified RT. Seventy patients received sufficient therapy to be evaluable for treatment response. Forty-one (58%) achieved a complete remission and 16 (23%) achieved partial remission. Twenty-four of 41 children (59%) achieving a CR have relapsed. The proportion of children who remained relapse-free at 2 and 3 years of follow-up was 44% or 42%, respectively. Overall, 40 children have developed recurrent sarcoma and the median disease-free interval and overall survival times were 54 and 88 weeks, respectively. Most children experienced severe myelosuppression; there were three early deaths from infection which occurred during granulocytopenic periods. One third of the patients experienced cystitis. Children with soft-tissue sarcomas arising in the retroperitoneal space have a poor prognosis associated with large tumors which, because of location and/or extent (Groups III or IV), are unresectable and difficult to treat.

Antineoplastic Combined Chemotherapy Protocols↗

Effects of intensive clinical exposure on attitudes of medical students toward cancer-related problems.

The attitudes of third-year medical students toward cancer and patients with cancer was examined before and after a 6-week clerkship that included contact with pediatric patients with cancer and their families. A 51-item testing instrument was employed, which included pediatric, adult, and general oncology questions. Beginning with positive attitudes toward the importance of early diagnosis, aggressive therapy, and the complete disclosure of prognosis, the clinical exposure appeared to strengthen the two former attitudes and somewhat diminish the latter. Approval of aggressive cancer therapy was stronger for children than for adults; but approval of both aggressive therapy and intensive surveillance of patients in remission was increased in regard to adults as well as children after the clerkship. A comparison with responses of second-year medical students from another institution suggests that third-year students recognize greater personal limitations in respect to management and adopt a more "defensive" position regarding the patient. In general, during the clerkship, the students moved in the direction of attitudes that were previously designated to be appropriate for students by a multidisciplinary committee that was distinct from the instructional staff in oncology.

Adult↗

Medical students' concepts of childhood cancer and its management.

Medical student's attitudes toward cancer and patients with cancer were studied prior to and following a required pediatric clerkship which included contact with children on an oncology service. Emphasis in the study was placed on the students' reactions to the child with cancer, and these were compared with the same students' attitudes in the context of the adult with cancer or general oncology. Early diagnosis is regarded as of more significance, and an aggressive therapeutic response following diagnosis of more urgency when the patient is a child. These attitudes, recognizing the importance of early diagnosis and expressing strong approval of aggressive therapy for the pediatric patient, increased during the clerkship. The students strongly supported a program aimed at return of the child to his normal activities with the least delay; recognized the special significance of long-range surveillance for secondary effects in the pediatric patient; and recommended the "center" as opposed to the community hospital as the site for care of the child with cancer. In other areas of cancer management, including (a) the importance of psychosocial support, (b) the problems of emotional involvement of the physician with the patient, and (c) care of the dying patient, attitudes toward patients in the two age groups was not significantly different.

Attitude of Health Personnel↗

Sarcomas of the vagina and uterus: the Intergroup Rhabdomyosarcoma Study.

During a 12-year period (1972-1984), 43 patients with sarcomas of the female genital tract were admitted to the Intergroup Rhabdomyosarcoma Study (IRS), including 31 with primary tumors of the vagina; and 12 with tumors of the uterus, including the cervix. Thirty-four of these can be evaluated on the basis of periods of observation from 18 months to 12 years. Primary tumors of the uterus were a distinct group, distinguished from those arising in the vagina by patient age-range and probably by prognosis, as well as site. Patients with vaginal tumors, with a mean age of 1.8 years, responded to a multimodality approach employing combinations of chemotherapy (vincristine sulfate and actinomycin D, or the aforementioned two drugs with cyclophosphamide +/- doxorubicin hydrochloride), irradiation, and/or surgery, with only one tumor-related death, among 24 evaluable patients. In contrast, among the patients with primary uterine tumors, in which the mean age was greater than 14 years, four of ten evaluable patients died secondary to tumor relapse or progression.

Adolescent↗

Preferentially longer survival of males than of females with untreated extrahepatic biliary atresia: correlations with time course of intrahepatic lesions and suggestion of possible ethnic influences.

Males with untreated or unsuccessfully treated extrahepatic biliary atresia show statistically significantly longer survival than females. Females show a greater degree of intrahepatic biliary ductular proliferation than males in the early phase of the process (to age approximately 200 days) and greater duct regression and more rapid connective tissue proliferation than males from approximately 200 to 400 days. Females also show greater frequency of statistically significant hepatomegaly than males over the first year. The black and Hispanic patients in this series tended to show a less marked degree of bile ductule proliferation in the early phase of the process than other patients, but the numbers of such patients available for study were not enough for statistical significance. This point, and its possible clinical correlates, will require further analysis, as will possible biochemical explanations for the differences between males and females in the time course of the intrahepatic lesions of extrahepatic biliary atresia.

Black or African American↗

Complications related to 234 staging laparotomies performed in the Intergroup Hodgkin's Disease in Childhood study.

This is a study of 234 children and young adult patients entered in the Intergroup Hodgkin's Disease in Childhood (stage I-II) Study from November 1975 to June 1981 and followed for a mean of 3.8 years after laparotomy. All patients had a staging laparotomy with total splenectomy, liver biopsy, and sampling of abdominal lymph node groups. Four patients (1.7%) have had documented sepsis, and three have had possible sepsis. There has been no sepsis-related death. Intestinal obstruction requiring operation was noted in four patients (no intestinal resection required). Urgent operation was necessary in two patients, one with ureteral obstruction and one with ovarian torsion, following a repositioning procedure, neither of these patients died. Organisms in the four patients with positive blood cultures were Streptococcus pneumoniae (two) and Haemophilus influenzae (two). Of the 234 patients in the study, 194 (83%) had received polyvalent pneumococcal vaccine, and 174 (74%) were taking prophylactic antibiotics. One of the two patients with pneumococcal sepsis had not been vaccinated, and the second was vaccinated only during radiotherapy. Only one of the four patients with positive blood cultures was on a prophylactic antibiotic treatment regimen at the time of the septic episode. The liabilities in employing laparotomy-splenectomy for the evaluation of pediatric patients with Hodgkin's disease include both general surgical complications and an increase in the risk of hyperacute infection, specifically related to encapsulated species. The latter appears to be modified to a major degree by current prophylactic measures or therapy.

Adolescent↗

Effect of total parenteral nutrition on marrow recovery during induction therapy for acute nonlymphocytic leukemia in childhood.

Ten well-nourished children with acute nonlymphocytic leukemia (ANLL) were randomly assigned to groups that received (a) total parenteral nutrition (TPN) throughout the period of induction therapy or (b) standard nutritional support. Body mass and skin hypersensitivity reactions were better maintained in experimental patients. Patients on TPN had higher total white blood counts, absolute granulocyte counts, and platelet counts than did control patients during the course. No difference was apparent in the frequency of febrile episodes, or other aspects of the patients' courses. This preliminary report suggests that intensive nutritional support may accelerate the recovery of normal marrow function during induction therapy for ANLL.

Acute Disease↗

Mortality among children with rhabdomyosarcomas of the alveolar histologic subtype.

Of 116 patients with rhabdomyosarcoma of the alveolar histologic subtype who entered the Intergroup Rhabdomyosarcoma Study (IRS) from 1972 to 1978, there were 72 deaths (63%), compared with a mortality of 39% among patients with all nonalveolar types combined. The subgroup with alveolar histology contributed greater than 29% of the total mortality, although it represented 20% of the total patients (p less than .001). This recurrence rate reflects increased local, regional, and distant relapse. Differences were most marked in patients with grossly excised tumors (clinical groups I and II) in which the mortality was 44% in patients with alveolar tumors (48 patients) versus 13.5% in those with embryonal histology (111 patients), and 16% in all patients with nonalveolar tumor types. When survival was influenced by primary tumor site this reflected, in most body areas, an increase in the proportion of patients with the alveolar histology in that site. Patients with unresected or disseminated tumors (clinical groups III and IV) of the alveolar subtype have initial response rates to VAC and radiotherapy which are similar to those of patients with tumors of other cell subtypes (70% for group III and 50% for group IV). In these clinical groups, the differences in survival related to histologic subtype are not significant. The presence of the alveolar histologic subtype represents a rational basis for employing more intensive therapy in the management of patients with rhabdomyosarcomas.

Adolescent↗

Compliance with staging laparotomy in the Intergroup Hodgkin's Disease in Children Study: a preliminary report.

The intergroup Hodgkin's Disease in Children Study was designed to determine minimum effective treatment for stage I and II Hodgkin's disease in children up to 18 years of age. Accurate staging of the disease was therefore critical. The number of cases in which the surgeons adhered to the principles and details of the protocol staging laparotomy were less than anticipated during the first 3 years of the study. Improvement in protocol compliance increased as the study progressed. The educational efforts by cooperative groups are credited with initiating this improvement.

Adolescent↗

Adenocarcinoma of the colon and rectum in the adolescent.

Between 1969 and 1982, seven adolescents (six girls and one boy) with rectal bleeding and other nonspecific intestinal symptoms were diagnosed with biopsy to have colonic or rectal carcinoma. All came from an impoverished urban environment, and two patients were members of a family with a cancer diathesis (Turcot's syndrome). Surgery provided the only successful curative or palliative treatment. Chemotherapy and radiation therapy were unsuccessful in preventing the progression of disease in far-advanced, nonresectable cases. Prompt attention to lower gastrointestinal bleeding and nonspecific abdominal symptoms in adolescents may result in the earlier diagnosis of colorectal malignancy and improved opportunity for definitive surgical cure.

Adenocarcinoma↗

Bladder and prostatic tumors in the intergroup Rhabdomyosarcoma study (IRS-I): results of therapy.

Sixty-four children with primary rhabdomyosarcoma of the bladder or prostate were enrolled in the IRS during the initial five years (October 1972-November 1977). Observation of these patients for from 2 1/2-8 years forms the basis of this report. The chemotherapy-radiotherapy regimens employed (IRS) for each Clinical Group were: (1) Group I (completely excised tumor), sequential actinomycin-D (ACD), vincristine (VCN), and cyclophosphamide (CYP), i.e., standard (VAC), with or without radiotherapy (RT); (2) Group II (resected local disease with node involvement, "microscopic" residual, or local extension), RT plus sequential ACD and VCN, or RT plus standard VAC; (3) Group III, (gross residual disease); and (4) Group IV (dissemination), RT and either pulse VAC or pulse VAC plus Adriamycin (ADR). Pulse VAC consisted of VCN (day 1), plus daily intravenous ACD and CYP (days 1-5). Relapse rates were: Group I, 0/8; Group II, 6/23; and the mortality in Group III, 6/23; and in Group IV, 7/10. Among patients with bladder tumors, the rate of relapse was 2/11 following pelvic exenteration (anterior, 10; total 1); 5/12 following partial cystectomy or gross tumor excision; and 3/5 following a primary chemotherapy-radiotherapy (PCR) regimen. In patients with prostatic tumors (Groups I-III), relapse occurred in 0/14 patients treated initially by pelvic exenteration (anterior, 12; total, 2); and in 2/11 patients treated by a PCR regimen.

Adolescent↗

Soft-tissue sarcoma of the trunk in childhood. Results of the intergroup rhabdomyosarcoma study.

Disease-free survival data were obtained on 30 children with soft-tissue sarcoma of the trunk. The children were clinically grouped and treated in accord with the IRS protocol (Cancer 1977; 40:2015) from November 1972 through December 1976. Histologically, 40% of the tumors were alveolar rhabdomyosarcoma (RMS), 20% were embryonal RMS, 20% were extraosseous Ewing's sarcoma, 17% were undifferentiated sarcoma, and 3% were pleomorphic RMS. In 13 patients with primary tumors of the chest wall, the male-to-female (M:F) ratio was 3:11, and the median age was 12.5 yr. Five of the ten patients (50%) with localized tumor (Groups I-III) were disease-free at a median of 4.7 yrs. after diagnosis; two died of locally recurrent tumor, two died of metastases to lungs or bones, and 1 died of intracranial hemorrhage. None of the four with chest wall tumors and distant metastases (Group IV) survived. In ten patients with localized paraspinal primary tumors, the M:F ratio was 8:2, and the median age was 3.5 yrs. None had metastases. Seven of ten (70%) were disease-free at a median of 4.7 yrs. after diagnosis. Two died after regional recurrence developed (one retroperitoneal, one meningeal), and one died of lung metastases. In six patients with primary tumors of the abdominal wall, the M:F ratio was 3:3 and the median age was 9.5 yrs. Three of five with localized tumor (Groups I-III) were disease-free at a median of 5 yr. after diagnosis; one died after regional recurrence, and one died from accidental trauma. The one Group IV patient died of tumor. Overall, 15 of 30 patients (50%) are alive and free of recurrent disease at a median of 5+ yr. after initiation of treatment. The authors conclude that prognosis is most favorable for patients with paraspinal tumors, least favorable for those with chest wall tumors, and intermediate in patients with abdominal wall tumors. Prognostic differences appeared to be influenced by extent of disease at diagnosis and histologic subtype of the sarcoma.

Abdominal Neoplasms↗

Extremity lesions in the Intergroup Rhabdomyosarcoma Study (IRS-I): a preliminary report.

The sites in which rhabdomyosarcoma occurs most frequently in children and young adults are the head and neck, genitourinary tract, and the extremities. Among these three sites, tumors of the extremities have been associated with the highest relapse rate and lowest survival rate in patients treated by protocols of the Intergroup Rhabdomyosarcoma Study (IRS). In five of six patients treated by primary extremity amputation, tumor recurred. Seven of 21 patients in Clinical Group I (completely resected tumors), and 9 of 27 patients in Clinical Group II (patients with gross tumor excision but positive lymph nodes, "microscopic residual" disease, or extension beyond the muscle of origin) had relapse. Thirteen of 18 patients (72%) in Clinical Group III (gross residual disease) responded to a chemotherapy-radiotherapy regimen, but ten have subsequently had relapses; and 13 of 18 are dead. Of 30 patients in Clinical Group IV (disseminated disease on entry), 15 initially responded to chemotherapy, but 25 of 30 are dead. The period of surveillance is 2 1/2 to 7 1/2 years, with a mean of 46.3 months at least examination. Increased rates of relapse were seen in patients with extremity tumors, as opposed to tumors in other sites, irrespective of the specific IRS chemotherapy-radiotherapy regimen employed. In Clinical Group I (nonamputation), relapse rates by histologic subtype of rhabdomyosarcoma were alveolar subtype, 5/8; embryonal, 1/7; and all other subtypes, 1/6. Clinical Group II, relapse rates were alveolar, 6/12; embryonal, 5/11; all other subtypes, 3/10.

Amputation, Surgical↗

Primary chemotherapy in the treatment of children with bladder--prostate tumors in the Intergroup Rhabdomyosarcoma Study (IRS-II).

Twenty-nine children (24, male; 5, female) with non-disseminated rhabdomyosarcomas of the bladder or prostate were treated (1978-1980) by a primary chemotherapy regimen consisting of vincristine, actinomycin D, and cyclophosphamide ("Pulse" VAC), with or without local radiotherapy. During the initial 20 wk of chemotherapy, nine children achieved a Clinical Complete Response (CCR). Three of these are without evidence of disease (NED) and have functional bladders, two following partial cystectomy. Four who achieved a CCR subsequently relapsed or remained biopsy positive, but are at present NED following radiotherapy and anterior exenteration. Two patients who achieved CCR status relapsed and have died of disease. Twelve patients had a Clinical Partial Response (CPR) in less than 20 wk and two others in less than 40 wk. Seven of these are NED with intact bladders following chemotherapy-radiotherapy; and an additional patient is NED following partial cystectomy. Four patients in the CPR group have been treated by exenteration following failure to achieve complete response, and are NED. One patient has died, and one has progressive disease. Six patients had an inadequate response to chemotherapy (NR). Anterior exenteration was carried out in three, and two of these have survived. The overall results in these 29 patients are: (A) alive and disease-free with functional bladders, 11; (B) alive and disease-free following anterior exenteration, 10; and (C) dead or death from tumor anticipated, 8. The function of retained bladders (11) has been satisfactory.

Adolescent↗

Evaluation of the surgical aspects of staging laparotomy for Hodgkin's disease in children.

Experience with 72 children in which the type of staging laparotomy recommended by the Intergroup Hodgkin's Disease in Childhood Study (IHDCS) was employed (1967-1981) is reviewed. Laparotomy altered the stage in 35% of these patients including advance in stage (I-II to III-IV) in 24 patients, and reduction in stage (III to II) in one patient. In adults, Stage III disease is divided into III1 and III2 on the basis of the presence or absence of lower abdominal node involvement; and prognosis is significantly better in III1. Nine patients from two additional institutions were included in a special study of Stage III disease. This included 22 children in III1 and 11 children in III2. Although the children with Stage B (systemic symptoms) disease were concentrated in III2, none of the measured difference between these two groups were significant. No fatal postsplenectomy sepsis has been noted since the use of pneumococcal vaccine and prophylactic penicillin became standard.

Abdomen↗