Metastatic cutaneous carcinoid tumor mimicking an adnexal poroid neoplasm

Objective: Metastatic cutaneous neoplasms may be difficult to differentiate from primary cutaneous neoplasms. Herein, we report an unusual case of metastatic cutaneous carcinoid tumor mimicking an adnexal poroid neoplasm. Methods: A 53‐year‐old male man presented with a neoplasm on the vertex of the scalp, clinically resembling a pigmented basal cell carcinoma. Results: A shave biopsy was suggestive of an apocrine poroma, however, a metastatic carcinoma could not be excluded. After acquiring additional clinical information and the complete excision of the neoplasm, further immunohistochemical stains supported the diagnosis a metastatic carcinoid tumor. Conclusion: To our knowledge, this is the first case of metastatic carcinoid tumor reported that has mimicked a poroid neoplasm.