Padilla RAL, Hernández GM, Alcántara VA

Language: Spanish
References: 18
Page: 125-128
PDF size: 59.42 Kb.

ABSTRACT

Benign Multicystic Mesothelioma (BMM) is a very rare lesion that arises mainly from mesothelial cells of the pelvic peritoneum and may involve the whole abdominal cavity. The case of a 40-year old woman with pelvic pain and abdominal distension is presented. Abdomino-pelvic ultrasound and computerized tomography showed multiple cystic lesions. A laparotomy a multicystic lesion was found that involved the abdomino-pelvic cavity. The tumor was partially removed, sized 23 x 20 x 8 cm, and showed a smooth-surface cysts with serous to mucinous intracystic fluid, intermingled with adipose tissue. Histologically the cysts were lined by a single layer of flat to cuboidal mesothelial cells, some of them with a hobnail appearance, and separated by thin fibrous septa. Immunohistochemically the mesothelial cells were positive to HBME-1 and negative to vascular markers. This is important to differentiate it from cystic lymphangiomas. Clinical presentation, degree of extension and the high ability of recurrence support the neoplastic character of this tumor. Although controversy about the neoplastic vs hyperplastic nature of this lesion still exist, we consider that BMM is a true neoplasm of intermediate malignancy between adenomatoid tumor and malignant mesothelioma.

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