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Case Reports
. 1993 Jan;20(1):75-9.
doi: 10.1007/BF02261249.

Visualization of the thymus with therapeutic doses of radioiodine in patients with thyroid cancer

T Michigishi  1 , Y Mizukami, N Shuke, K Yokoyama, M Noguchi, Y Watanabe, O Matsui, T Aburano, N Tonami, K Hisada
Affiliations
Case Reports

Visualization of the thymus with therapeutic doses of radioiodine in patients with thyroid cancer

T Michigishi et al. Eur J Nucl Med. 1993 Jan.

Abstract

Two cases of papillary carcinoma of the thyroid are presented in which whole-body scans following therapeutic doses of iodine-131 revealed intense anterior mediastinal uptake. In both cases, the mediastinal uptake was absent from scans obtained after removal of the entire thymus. Histologically, the resected thymus glands showed hyperplasia and contained neither thyroid tissue nor metastatic foci of thyroid carcinoma. We therefore concluded that anterior mediastinal uptake of radioiodine may be caused by hyperplasia of the thymus.

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