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Arch Surg. 2009;144(2):192.

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Answer: Rectus Abdominis Intramuscular Hemangioma

The patient underwent an exploratory laparotomy, radical resection of the left abdominal wall mass, and reconstruction of the abdominal defect with a large acellular dermal inset and Marlex mesh (Figure 2). Hemangiomas, the most common tumor of infancy, occur often in the head and neck region, although 25% are found in the trunk. Giant intramuscular hemangiomas are progressively enlarging benign tumors, characterized by variable appearance. They are congenital malformations that may be present at birth and become significant only in adulthood. Intramuscular hemangiomas occur in patients of all ages but are most common in young adults, with 90% occurring before the age of 30.¹ They may act as infiltrating lesions, leading to the misdiagnosis of angiosarcoma. Hemangiomas are distinguished from angiosarcomas by the lack of pleomorphism or significant endothelial multilayering and by the lack of irregular, ramifying, anastomosing thin-walled channels. In addition to blood vessels infiltrating the spaces . . . [Full Text of this Article]

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Arch Surg. 2009;144(2):191.
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