The late health effects associated with radioiodine ( 131 I) given as treatment for thyroid cancer are difficult to assess since the number of thyroid cancer patients treated at each centre is limited. The risk of second primary malignancies (SPMs) was evaluated in a European cohort of thyroid cancer patients. A common database was obtained by pooling the 2-year survivors of the three major Swedish, Italian, and French cohorts of papillary and follicular thyroid cancer patients. A time-dependent analysis using external comparison was performed. The study concerned 6841 thyroid cancer patients, diagnosed during the period 1934 -1995, at a mean age of 44 years. In all, 17% were treated with external radiotherapy and 62% received 131 I. In total, 576 patients were diagnosed with a SPM. Compared to the general population of each of the three countries, an overall significantly increased risk of SPM of 27% (95% CI: 15 -40) was seen in the European cohort. An increased risk of both solid tumours and leukaemias was found with increasing cumulative activity of 131 I administered, with an excess absolute risk of 14.4 solid cancers and of 0.8 leukaemias per GBq of 131 I and 10 5 person-years of follow-up. A relationship was found between 131 I administration and occurrence of bone and soft tissue, colorectal, and salivary gland cancers. These results strongly highlight the necessity to delineate the indications of 131 I treatment in thyroid cancer patients in order to restrict its use to patients in whom clinical benefits are expected.
French long-term survivors of testicular cancer do not express more impairment of health-related quality of life or familial or professional life in comparison with healthy men. They did have more sexual life problems and found difficulty in borrowing from banks. This information should be used by practitioners to help their patients cope with their disease and return to normal life.
Since 1981, 20 patients with anaplastic giant cell carcinoma of the thyroid have been prospectively treated according to a combination regimen of chemotherapy and external beam radiation therapy. Two types of chemotherapy were used every 4 weeks, depending on the patient's age. For those younger than 65 years, a combination of doxorubicin (60 mg/m2) and cisplatin (90 mg/m2) was given, and for older patients mitoxantrone (14 mg/m2) was used. Radiotherapy was carried out between Day 10 and Day 20 of the first four cycles of chemotherapy. It delivered 17.5 Gy in 7 fractions to the neck and the superior mediastinum. Survival exceeding 20 months was observed in three patients. Complete neck tumor response was observed in five patients, among whom four had undergone previous operations. No response was seen in distant metastases, which were the cause of death in 14 patients. These treatment modalities are effective in some patients, both in terms of survival and of local control, avoiding death from local invasion. Gross tumor resection should be performed whenever possible but should not delay the commencement of this protocol. Toxicity was high and remains the main limiting factor.
Combinations of 5-fluorouracil (5-FU) and streptozocin and 5-FU and dacarbazine were given alternately to 20 patients with metastatic medullary thyroid carcinoma. Three partial responses and 11 long-term stabilizations were observed. No unexpected toxicity occurred.
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