Abstract:Summary:
Chronic expanding hematoma (CEH) is a rare type of hematoma that expands slowly and continuously without compromising coagulation. Its etiology is often unknown. However, we experienced a rare case of CEH, in which an epidermal cyst was thought to be the cause. A 57-year-old man had developed a painless soft-tissue tumor in his left buttock 45 years earlier, which slowly grew to 11 cm in diameter. Preoperative magnetic resonance imaging suggested a large cyst containing several masses. Sur… Show more
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