1992 Volume 53 Issue 6 Pages 1261-1264
Ultrasonography ranks high in the diagnosis of thyroid disease. At this center mass screening using ultrasonography of the thyroid gland was performed in 21, 471 subjects from 1986 to 1990, and thyroid cancer was found in 15 of them (detective rate: 0.07%). The male-to-female ratio was 10:5, with an average age of 52.4 years. There were 12 patients with papillary carcinoma and 3 with follicular carcinoma. Microcarcinoma could be detected in 2 patients, however, lymph node metastasis nl (+) and extraglandular invasion were found in 4 and 3 patients respectively. Ultrasonographic findings included mosaic echo in 11 and hypoechoic lesion in 4 patients. Of the 15 patients 11 were associated with strong echo. Successful diagnosis only by ultrasonography was made in 2 patients whose lesions were not palpable (JTO). The mass screening of the thyroid gland using ultrasonography is available in terms of its detective rate, good diagnosis ability, and easiness in handling.