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Biomedical subjects

H Hertz

Publications and source records attributed to H Hertz.

At least 55 records · Page 3Linked to original sources

[Second cancer. Risk of a second malignant neoplasm in persons with cancer in childhood and adolescence].

Cancer treatments in early life have in previous studies been associated in with high risks of developing a second malignant neoplasm. This study reports on the relative and attributable risks of second malignant neoplasms among 30,880 people under the age of 20, who had been identified in the files of any of the five Nordic cancer registers, 1943-1987. Overall, 247 cases of second malignant neoplasms were observed in 238 patients, yielding a relative risk for cancer of 3.6 (95% confidence interval 3.1-4.1). The risk changed significantly from 2.6 in people first diagnosed during the 1940s and 1950s to 6.9 among cohort members included in the late 1970s and 1980s. Highest levels of the relative risk were seen during the ten years immediately after first malignant diagnosis. The incidence of second malignant neoplasms attributable to the first cancer and associated treatments, however, showed a consistent rise throughout the 45 years of follow up. It was concluded that the estimated risks for second malignant neoplasms were significantly lower than those found in most large hospital based studies but compatible with the results from a similar population based study in the United Kingdom. Extent of risk and cancer pattern were similar among the Nordic countries and are believed to be representative for a large part of the European population.

Adolescent↗

[Neonatal cancer in Denmark 1943-1985].

In order to describe the incidence, distribution and prognosis of neonatal cancer, 76 cases (44 boys, 32 girls) of cancer in the first 28 days of life were identified in the Danish Cancer Registry within the period 1943-85. All cases were re-evaluated and the International Classification of Disease for Oncology (ICD-O) code was applied. The incidence is calculated to 2.38 (1.88-2.98) cases per 100,000 births. The most common tumour was neuroblastoma (26%) followed by leukaemias (16%), soft tissue sarcomas (14%) and brain tumours (11%). The five year survival rate was 25% (15.1-39.0) with the highest survival rate among soft tissue sarcomas (55%) and neuroblastomas (25%) and the lowest among leukaemias and brain tumours (0). Eighteen per cent of the cases were incidental findings. Two cases of secondary malignancy were identified.

Age Factors↗

[Limbus diagnosis by computerized tomography after initial traumatologic dislocation of the shoulder].

This paper shows a retrospective analysis of 98 shoulder joint CT scans after traumatic primary anterior dislocation in the period of 1988 till December 1991. The intraoperative findings and the X-ray characteristics beside arthrographic and MRI examinations led us to a classification of four types by pathomorphologic aspects, the type of the tear correlated to the degree of instability. For anterior limbus tear and lesions, a CT scan gives a diagnostic sensitivity of more than 90% (own rate 94.6%). Concerning our patients, the total lesions rate of 77.6% following first traumatic dislocation justifies a progressive examination and evaluation of the joint structures, that enhance further dislocations. Hereby, inspite of its invasivity, joint CT scan have, in comparison to other diagnostic procedures, proved to be routinely useful.

Adult↗

Normal final height after treatment for acute lymphoblastic leukemia without irradiation.

In order to evaluate the influence of chemotherapy on linear growth, 28 children treated for acute lymphoblastic leukemia without irradiation were evaluated before, during and after the end of therapy. Median age at diagnosis was 4.4 years (range 2.2-12.7 years) and treatment was discontinued after a median period of 3.1 years (3.0-5.2 years). We observed a significant decrease in height SDS (p = 0.006) from diagnosis to the end of chemotherapy, followed by catch-up in height SDS from the end of chemotherapy to final observation. Catch-up growth took place mainly within the first 2 years after cessation of therapy. In 22 patients final height was reached. Final height was normal (median height SDS -0.035) and even significantly higher than mid-parental height SDS (p = 0.012). In those patients who attained adult stature, the sitting height to standing height ratio was also normal. In conclusion, in children treated for acute lymphoblastic leukemia, chemotherapy exerted a negative influence on growth, but catch-up occurred within 2 years after cessation of therapy, resulting in normal final height and body proportions.

Adolescent↗

[Epiphyseal growth after replantation in childhood].

Long-term results in 17 patients with 19 replanted parts of the upper extremity after replantation during childhood are presented. Regarding longitudinal epiphyseal growth, three patients had normal growth. In 15 cases, average length of the replanted digits attained 88.6% of normal and one patient gained overgrowth of 118% of normal. In every case, consolidation of the fracture was seen. Four patients developed a deviation of the replanted finger in the frontal plane. The cause of deviation in every case was incorrect primary reposition and not a disturbance of growth of the replanted epiphysis.

Adolescent↗

Second malignant neoplasms after cancer in childhood or adolescence. Nordic Society of Paediatric Haematology and Oncology Association of the Nordic Cancer Registries.

OBJECTIVE: To assess the relative risk of developing a second malignant neoplasm in people with a diagnosis of cancer in childhood and adolescence. DESIGN: Register based follow up study. SETTING: Populations of Nordic countries. SUBJECTS: 30,880 people under the age of 20 with a first malignant neoplasm diagnosed during the period 1943-87. MAIN OUTCOME MEASURES: Relative and attributable risks of second malignant neoplasms by type of first cancer, age at first diagnosis, calendar period, sex, and country. Expected figures were based on the appropriate national incidence rates for cancer. RESULTS: 247 cases of second malignant neoplasms were observed in 238 patients, yielding a relative risk for cancer of 3.6 (95% confidence interval 3.1 to 4.1). The risk changed significantly from 2.6 in people first diagnosed during the 1940s and 1950s to 6.9 among cohort members included in the late 1970s and 1980s. Increases were observed for most types of cancer. Highest levels of the relative risk were seen during the 10 years immediately after first malignant diagnosis. The incidence of second malignant neoplasms attributable to the first cancer and associated treatments, however, showed a consistent rise throughout the 45 years of follow up. CONCLUSION: The estimated risks for a second malignant neoplasm were significantly lower than those found in most large hospital based studies but compatible with the results from a similar population based study in the United Kingdom. Extent of risk and cancer pattern were similar among the Nordic countries and are believed to be representative for a large part of the European population.

Adolescent↗

Prophylactic cranial irradiation increases the risk of testicular damage in adult males surviving ALL in childhood.

By combining three series of Scandinavian patients, we were able to compare the late testicular sequelae in 41 adult males whose therapy had included chemotherapy alone or chemotherapy with cranial irradiation without other radiotherapy for ALL in childhood. In multivariate analysis, cranial irradiation was associated with a decrease of 5.7 (95% confidence limits 1.5-9.9) cm (P = 0.010) in height, and a decrease of 4.8 (0.3-9.2) ml (P = 0.036) in testicle size. Cyclophosphamide was associated with increases of 8.2 (-0.5-16.9) (P = 0.065) and 3.9 (0.3-7.4) U/L (P = 0.036) in serum FSH and LH concentrations, respectively. Of the 12 patients who had received both cranial irradiation and cyclophosphamide therapy, 4 (33%) had delayed pubertal development as compared with 1 (3.5%) of the other 29 patients (P = 0.008). Patients 12-16 years of age at diagnosis had larger testicles (P = 0.051) and higher testosterone concentrations (P = 0.026) than others. Neither sexual activity nor semen findings correlated with the preceding treatment. Our data indicate that prophylactic cranial irradiation may be associated with impaired growth and pubertal development in boys with ALL.

Adolescent↗

[Effects of flexed position of the wrist joint after flexor tendon sutures on the median nerve].

Twelve patients with dynamically treated ruptures of finger flexor tendons the median nerve was electroneurologically examined at an average of 16 months after operation. The parameters were abnormal in about one third to three quarters of the patients. In accordance with literature the reason for this is seen in pronounced flexion position of the wrist during treatment according to Kleinert.

Adult↗

[MR and ultrasound study of Achilles tendon injury].

In 24 patients with lesions of the achilles tendon MRI and ultrasound was performed to compare the results with clinical examination. MRI had an accuracy of 100%, ultrasound of 90%. Especially partial rupture with chronic degenerative lesions of the tendon can be diagnosed more accurate by MRI which enables easier indication for treatment. By MRI diagnostic differentiation of our patients in four groups was possible.

Achilles Tendon↗

Superior treatment results in females with high-risk acute lymphoblastic leukemia in childhood.

In this population-based study, 808 children aged 1-15 years from Denmark, Finland, Iceland, Norway and Sweden, were diagnosed between July 1981 and June 1986 as suffering from non-B-cell acute lymphoblastic leukemia (ALL). The total population was 4.5 million children. Remission was achieved in 770/808 of the patients (95%). No sex difference in the remission rate was observed. The event free survival (EFS) at 102 months was 0.47 for males and 0.62 for females (p less than 0.001). There was no difference in EFS between males and females with standard-risk (0.58 and 0.60) or intermediate-risk (0.47 and 0.60) ALL, respectively. The EFS for females with high-risk ALL (0.68) was superior to that of males with high-risk ALL (0.31). Cox multivariant analysis showed that white blood cell count, sex, age and thrombocyte count were significant prognostic factors in all children. The intensified treatment according to the prognostic factors used in this study led to equal EFS for females with ALL from all risk groups. Males with high-risk ALL, however, did not benefit from the intensified treatment.

Age Factors↗

[Results after conservatively managed vertebral fractures of the thoracolumbar level with special reference to bony stenosis of the spinal canal].

Seventy-two patients with compression fractures of the lower thoracic and lumbar spine who were treated by the Böhler method from 1972 to 1987 were followed up to compare the clinical signs and the results of conventional radiography and spinal computed tomography. There were 33 men and 39 women with an average age of 44.3 years (23-69 years). Treatment by the Böhler method is indicated for fractures between T12 and L5, which constitute 60% of all vertebral fractures. The main distribution in our patients was T12 (n = 26) and L1 (n = 33). Four patients primarily had neurological symptoms. The mean duration of hospitalization was 16 days (4-54). In our results, back pain is the most frequent complaint. A comparison with the findings on the day of the accident showed that the vertebral deformity decreased in all cases (index: mean accident = 0.64; mean follow-up = 0.82). In the CT scan we found spinal stenosis in up to 30% in 9 patients (12.5%) with no neurological symptoms. Based on these results, the authors recommend the Böhler method in lower thoracic and lumbar compression fractures without neurological symptoms. The main aim of the treatment must be reduction of the vertebral deformity to a minimum in order to maximize the biomechanical integrity of the vertebral column and prevent degenerative changes. The use of computed tomography is recommended even in these fractures because of possible spinal stenosis. CT is accurate, especially in evaluating the nature of facet joint failure.

Adult↗

Second malignant neoplasms in patients treated for childhood leukemia. A population-based cohort study from the Nordic countries. The Nordic Society of Pediatric Oncology and Hematology (NOPHO).

Among a cohort of 981 children who were followed up 4.3-26.5 years after cessation of antileukemic therapy, eight patients in remission of acute lymphoblastic leukemia (ALL) developed a distinctively new malignant disease. The second malignant neoplasms (SMN) included brain tumors, basal cell carcinomas, thyroid cancer, leiomyosarcoma and finally rhabdomyosarcoma in a patient who also had suffered from Hodgkin's disease while still on antileukemic treatment. Cranial radiation had been given to 58.4% of the patients in the study group, which consisted of 895 ALL patients who had completed various chemotherapy protocols. With one exception, the SMN appeared after 7.5-16.5 years at a location previously exposed to radiotherapy (RT). The estimated cumulative risk of SMN appearing within 20 years after diagnosis was 2.9%, and the corresponding risk for cases with RT was 8.1% compared to 0.3% for those without (p = 0.05). In a Cox regression analysis, the incidence rate ratio of SMN between patients with and without RT was 6.7 (95% CI = 0.8, 57.7). Based on age-, year- and sex-specific cancer incidence figures for Norway, the overall standardized incidence rate ratio (SIR) of SMN after treatment for ALL was 5.9 (95% CI = 2.2, 12.9). The number of brain tumors among patients who had received cranial radiation was nearly 27 times greater than expected, whereas no such tumors were seen after chemotherapy. Individuals treated for childhood ALL are at increased risk of a new malignancy, and this seems mainly to be associated with previous irradiation.

Antineoplastic Combined Chemotherapy Protocols↗

Classifying calcaneal tendon injury according to MRI findings.

Magnetic resonance imaging was performed on 28 patients with suspected calcaneal tendon injury prior to treatment. None of the patients were involved in competitive sports. All underwent clinical examination, some had had ultrasound or CT scans. We identified four types of lesions: type I, inflammatory reaction; type II, degenerative change; type III, incomplete rupture and type IV, complete rupture. Thirteen of the 28 patients underwent surgery and the diagnostic findings were verified. We recommend that type I, type II and type III lesions be managed conservatively, while type IV lesions should be operated in the young and active patient.

Achilles Tendon↗

[Results and analysis of poor results after conservative therapy of distal radius fracture].

The authors report on the results of a follow-up study of 120 conservatively treated distal radius fractures. Follow-up averaged 35 months (25 to 48 months). The quality of initial reduction has a crucial impact on the final outcome. 87 fractures showed nearly perfect anatomical reduction, of these, 48 resulted in excellent, 16 in good, 15 in satisfactory, and 8 in poor final anatomical outcomes. In comparison, in 33 fractures with unsuccessful initial reduction, only two cases gave excellent and 12 cases good results (42%); 11 fractures were considered satisfactory and 8 poor. The necessity of a second reduction was significantly lower in the first group of initially well-reduced fractures when compared to the second group: 8 (9.2%) to 14 (42.4%) respectively. Evaluation of the functional outcome according to the Sarmiento scheme showed a strong correlation between the AO fracture classification and the final outcome. In group A fractures, 78% gave excellent or good, 22% satisfactory or bad results. Type B fractures gave 82% excellent or good and 18% satisfactory or poor results. In group C, only 50% reached excellent or good results, the C 3 fractures having the worst prognosis, achieving excellent or good results in only 20% of the cases. Regression analysis demonstrated a significant correlation between anatomical and functional outcome.

Adult↗

[Limbus-plasty in recurrent anterior shoulder dislocation].

We are reporting the results of labrum reconstruction following recurrent dislocations of the shoulder. From 1985 to 1988 35 patients (27 male/eight female) aged 28.4 years on the average (20 to 45 years old) had surgical treatment. 33 of these 35 came in for a follow-up about 40 months later (28 to 60 months). So far, only one patient suffered a re-dislocation from major trauma. In that case, therapy was continued on a conservative basis and the patient has been free of complaints and re-dislocation for three years. No one of the remaining 32 patients had another dislocation. Shoulder mobility is normal in 29 patients. One patient's abduction is impaired by 10 degrees and one has a 10 degrees to 15 degrees impairment of outward rotation. 30 patients have no complaints whatever. 32 patients consider the outcome satisfactory and only one does not. 30 of 33 patients say their dexterity in sports is the same as prior to the accident and only three feel slightly impaired during competitive sports.

Adult↗