Carcinoid tumor of the thymus: a clinicopathologic report of two cases with a review of the literature.

Thymic carcinoid, a tumor with neuroendocrine-derived cells, is extremely rare. Its clinical and pathological features are distinct from other thymic tumors or carcinoids in other organs. The prognosis is poorer compared with other thymic tumors. Herein, we describe two cases with thymic carcinoids that were completely resected and underwent radiotherapy after surgery. The postoperative follow-up periods were 7 years and 7 months. These rare cases are discussed in light of the clinico-pathological picture of thymic carcinoid reported in the literature.