Abstract
Thymic carcinoid is a rare thymic neoplasm and frequently accompanies neuroendocrine neoplasia (MEN) type1. Other carcinoid tumors derived from the foregut, like bronchial, gastric, and duodenal carcinoid are also of high incidence in MEN type1 patients. Recent studies revealed thymic carcinoid as a FDG-avid tumor, and FDG-PET is useful in detecting thymic carcinoid, its metastases, and recurrence. On the other hand, FDG accumulation in bronchial carcinoid is variable. We report a case of thymic carcinoid and bronchial carcinoid in a patient who was diagnosed as having multiple neuroendocrine neoplasia type1 previously. FDG PET/CT showed abnormal accumulation in the thymic atypical carcinoid and its mediastinal lymph node metastases, whereas the FDG did not show uptake in the typical bronchial carcinoid. These findings indicate that FDG PET is useful in detecting thymic carcinoid and its metastases.
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