The lesion arising from modified smooth muscle cells of the glomus body in the digits is best described as:

• A. Hemangioma
• B. Glomus tumor (glomangioma)
• C. Lymphangioma
• D. Kaposi sarcoma

Answer: (B)

The main idea here is that the lesion originates from glomus cells, which are the modified smooth muscle cells of the glomus body found in the digits. A neoplasm arising from those cells is best described as a glomus tumor (glomangioma). Glomus bodies function as tiny arteriovenous shunts involved in temperature regulation, and the glomus cells encircle the small vessels. When a tumor arises from these cells, it forms a small, painful nodule in the fingers, most commonly under or near the nail bed, with notable sensitivity to cold.

This helps distinguish it from the other options: a hemangioma is a vascular tumor of endothelial origin, a lymphangioma comes from lymphatic vessels, and Kaposi sarcoma is a malignant vascular spindle-cell tumor linked to HHV-8 infection and immunosuppression. The key feature tying this lesion to the correct name is its origin from the glomus cells of the glomus body in the digits.