Biomedical subjects

S Mechlis

Publications and source records attributed to S Mechlis.

5 recordsLinked to original sources

PubMed1998

Surgery of thyroid cancer in children and adolescents.

BACKGROUND: Thyroid carcinoma in young patients under the age of 20 years is uncommon. Because of the slow progression of this disease, there is still a great deal of debate as to which operation strategy is best. METHODS: We undertook a retrospective study of 61 patients under 20 years of age with thyroid cancer treated at our institute between 1952 and 1995. They constitute 6.6% of the 921 thyroid cancer patients treated by us during the same period. Factors examined were: symptoms, metastases, treatment, complications, and survival. RESULTS: Total or near-total thyroidectomy was performed in 51 patients. Regional lymph node dissection was performed in 17 patients and modified radical neck dissection in 13. Fifty-one patients underwent pretracheal and paratracheal lymph node dissection. During the 43 years of this study, two patients died of thyroid cancer. CONCLUSIONS: Although most children are initially seen with more extensive disease than adults, the overall prognosis is excellent. The excellent prognosis is the product of initial aggressive treatment: near-total or total thyroidectomy and at least pre- and paratracheal lymph node dissection, followed by radioactive iodine therapy.

Adolescent↗

PubMed1997

Cancer of the thyroid in children and adolescents.

Thyroid cancer is a rare but intriguing malignancy when it occurs in childhood and adolescence. In this retrospective study 58 young patients with thyroid cancer treated at the Rabin Medical Centre are presented. We found that thyroid carcinoma in children presented in a more advanced stage than in adults, and the incidence of regional metastases at the time of presentation is higher. Nevertheless, the biological behaviour of the tumour is more benign. We believe that near-total thyroidectomy is the treatment of choice in this age group for disease limited to the gland, and total thyroidectomy with perithyroidal neck dissection should be performed in patients with nodal disease. For follow-up, we recommend physical examination with measurement of thyroglobulin and TSH levels, ultrasound examination of the neck and chest radiography.

Adenocarcinoma, Follicular↗

PubMed1987

Amiodarone-induced thyroid gland dysfunction.

Of a population of 400 patients treated with amiodarone, 97 underwent thyroid function evaluation. Of these, 20 patients proved to be thyrotoxic and 16 hypothyroid. In thyrotoxic patients, symptoms developed 2 to 36 months after starting treatment with amiodarone, the most specific laboratory finding being a high total T3 (TT3). No antithyroid treatment proved useful. Thyroid function returned to normal 3 to 7 months after stopping amiodarone therapy. In the hypothyroid group, a high thyroid-stimulating hormone was the most specific laboratory finding. These patients were treated with substitute therapy with or without withdrawal of amiodarone. The iodine content of the thyroid gland in part of this population taking amiodarone was measured by in vivo x-ray fluorescence. Patients in whom thyrotoxicosis developed showed especially high iodine contents. During treatment with amiodarone, patients at high risk of thyrotoxicosis were recognized by increasing TT3 values and higher iodine thyroid levels. A reduction in maintenance dose should be considered in this specific population.

Amiodarone↗

PubMed1984

Factors affecting the labeling of human fibrinogen with 99mTc in vitro.

The preparation of [99mTc]fibrinogen is described. The following factors which could affect the quality of this preparation were studied: pH, SnCl2 and protein concentrations, pre- and post-labeling incubation times and labeling temperature. A 90% labeling yield was achieved by incubating fibrinogen with SnCl2 at pH 9.8 for 22 h before adding the TcO-4 solution. The product obtained was stable and was 85% clottable. The x-ray fluorescence technique was employed to measure the amount of bound tin at different times.

Fibrinogen↗

PubMed1981

Organizing pneumonia-like process: an unusual observation in steroid responsive cases with features of chronic interstitial pneumonia.

Two patients under long-term surveillance showed the similar clinical features of low-grade fever, scanty productive cough, progressive dyspnea, and roentgenologic findings of lung infiltrates. Both patients responded only to systemic corticosteroid therapy and suffered relapses when it was discontinued. In one patient, who was found to be IgA-deficient, the pulmonary disease followed an episode of subacute thyroiditis; in this patient the intake of cephalosporin and subsequent rechallenge with the drug aggravated the disease. Needle biopsies in both patients showed the features of organizing intra-alveolar pneumonia. The histopathologic findings and their relation to the clinical symptoms are discussed.

Adrenal Cortex Hormones↗