Intra-abdominal cysts have a variety of origins, of which lymphatic and mesothelial types are the most commonly encountered. Here we describe a combined mesothelial cyst and lymphangioma arising within the small bowel subserosa of an 80-year-old woman. This was found incidentally at laparotomy performed for an unrelated condition. To date, such a hybrid lesion has not been previously reported. The ways by which this lesion might have arisen are discussed.
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