Clinical history: An 18-year-old woman presented to her physician with a complaint of abdominal pain. A subsequent CAT scan revealed a mass, initially thought to be a pedunculated leiomyoma. Exploratory surgery demonstrated a 12 x 6.5 x 5.5 cm mass involving the small bowel mesentery.
Pathology: A well-circumscribed ovoid mass was present within the mesentery but did not involved the wall of the attached small bowel segment. Sectioning of the mass demonstrated a purple-tan parenchyma with small punctate foci of necrosis, as well as a large necrotic zone centrally. Scrape preparations were made (below left, 100x, below right, 400x).
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