Abstract
We have recently encountered a case of lymphangioma coexisting with adenoma in the sigmoid colon excised by endoscopic polypectomy, which was diagnosed preoperatively by the colonoscopic examination. The patient, a 61-year-old man, was in our hospital with cerebral infarction, presently showed anemia and Guaiac-positive stool on laboratory findings. Double contrast radiograph of the colon demonstrated a hemisheric shadow with smooth surface and partial lobulation, and also revealed a polypoid lesion at the anal site of the shadow. Colonoscopy revealed a hemisheric, grey pale coloured, smooth tumor with fluctation and transparancy. The shape of the tumor after biopsy turned to be a pedunclated tumor for exuding fluid, and excised by endoscopic polypectomy with the other polypoid lesion. The excised tumors mesured 1.1 × 1.0 cm and 0.6 × 0.5 cm. Histopathologically, the tumor was dilated multiloculated cystic spaces, which were lined by flattend epithelium and separated by fibrous connected septae ; a diagnosis of cystic lymphangioma was made and the coexisted polypoid lesion was adenoma. The pathology and clinical findings of lymphangioma of the colon in the literature including the 40 cases reported in the world, especially about useful endoscopy and endoscopic polypectomy, were discussed.
