Angioleiomyoma of the Hand: A Report of Two Cases.

We present a case series of two rare cases of angioleiomyoma of the hand, an infrequent type of benign tumor. In the first case, a 41-year-old female presented with a left thumb mass that had increased in size over two years. Imaging studies revealed a destructive lesion involving the first webspace with infiltration of the first metacarpal, and the mass was initially suspected to be a sarcoma. However, a percutaneous image-guided fine-needle aspiration (US-FNA) and ultrasound-guided core-needle biopsy (USG-CNB) of the left-hand mass confirmed the diagnosis of angioleiomyoma. The mass was surgically excised, and the final diagnosis was consistent with the earlier USG-CNB. In the second case, a 63-year-old man with end-stage renal disease presented for consultation regarding dialysis access creation. During the examination, a large, soft, mobile mass adjacent to the wrist on the medial aspect of his hand was identified. This was presumed to be a lipoma. However, the histopathology report revealed a benign angioleiomyoma measuring 3.2 cm, which had been completely excised during the surgery. This case report highlights the importance of considering angioleiomyoma in the differential diagnosis of soft tissue masses and the utility of US-FNA and USG-CNB in diagnosing these tumors.