Ectopic hamartomatous thymoma - Report of a case with fine needle aspiration biopsy findings

BACKGROUND: Ectopic hamartomatous thymoma is a rare, benign tumor occurring exclusively in the supraclavicular ann suprasternal regions. To the best o f our knowledge, there are no English-language reports on its cytologic fin dings. CASE: A fine needle aspiration specimen from a mass in the suprasternal reg ion in a 63-year-old male revealed epithelial cell nests, spindle cells, a cluster of mature adipocytes and a small number of lymphocytes. CONCLUSION: Although ectopic hamartomatous thymoma is very rare, fine needl e aspiration cytology may contribute to the correct diagnosis in conjunctio n with the characteristic clinical findings.