Sixty-five patients with thyroid tumors received surgical treatment in our clinic in the 9 years from 1973 to 1982. There were 8 males and 57 females. 1) On histopathological examination, there were 28 cases of cancer (papillary carcinoma 19, follicular carcinoma 5, anaplastic carcinoma 3, and Medullary carcinoma 1), 24 adenoma, 7 adenomatous goiter, and 6 chronic thyroiditis. 2) We usually examine thyroid tumor using plain X-ray, CT-Scanning with enhancement, radio isotope (99mTcO4-, 201TlCl) and others before operation. From these examinations, we obtained useful information from the figures compared with 99mTcO4- and 201TlCl findings. 3) Calcifications in the thyroid were observed in 13% of the benign tumors and 57% of the malignant tumors on X-ray films in our series. 4) Eleven thyroid cancers (41 %) invaded in to the neighboring tissue and 9 of them infiltrated into the laryngeal-tracheal region.
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