title: Benign multicystic mesothelioma of the peritoneum: a case report.
abstract: The aim of this study is to report the experience of a case of benign multicystic mesothelioma of the peritoneum presented with acute appendicitis symptomatology. A 28 years old man with right lower and upper abdominal pain was admitted into hospital. Because of the clinical picture, the symptomatology and the leukocytosis a diagnosis of acute appendicitis was made and the patient underwent appendicectomy according to Mc Burney. At laparotomy some cc of purulent fluid were sucked and a cystic mass that contained clear fluid was revealed. In consequence of the incidental diagnosis a following middle laparotomy was made with a careful surgical excision of the mass and of the appendix. Macroscopically the lesion was identified like a neoplastic mass 25 centimeters in diameter, with a multicystic and fibrous-adipose aspect, with cysts 5 centimeters in diameter. The cystic spaces were lined by a layer of eptelial cells which presented positive reaction for cytokeratin and EMA, whereas endothelium markers were absent. The ultrastructural, morphological and immunohistochemical findings were diagnostic of a benign multicystic mesothelioma.
authors.affiliation: Istituto di Semeiotica Chirurgica, Università Cattolica del Sacro Cuore, Roma.
authors.forename: Antonio
authors.initials: A
authors.lastname: Cavallaro
authors.forename: Marino
authors.initials: M
authors.lastname: Murazio
authors.forename: Pietro
authors.initials: P
authors.lastname: Modugno
authors.forename: Alessio
authors.initials: A
authors.lastname: Vona
authors.forename: Luca
authors.initials: L
authors.lastname: Revelli
authors.forename: Angelo Eugenio
authors.initials: AE
authors.lastname: Potenza
authors.forename: Rosa
authors.initials: R
authors.lastname: Colli
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D000208:Acute Disease; D000328:Adult; D001064:Appendicitis / Q000175:diagnosis; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008654:Mesothelioma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D010534:Peritoneal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D010537:Peritoneum / Q000473:pathology; D013997:Time Factors