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A 48-year-old man presented to the emergency department with acute bleeding from a chronic scalp tumor. He had a "unicorn-like" growth that had been slowly increasing in size for several years and that had been mostly covered by his long hair (Panels A and B). Ulceration of the tip of the tumor had resulted in acute bleeding that had subsided at the time of presentation. Local excision was performed, followed by primary closure of the scalp defect. Histologic examination showed a cylindroma, an appendage tumor with apocrine differentiation within a fibrous dermal matrix. These tumors are generally benign, solitary, and . . . [Full Text of this Article] |
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