title: Spontaneous peritoneal malignant mesothelioma in a geriatric japanese macaque (Macaca fuscata).
abstract: A 28.5-year-old female Japanese macaque (Macaca fuscata) was euthanatized because of abdominal distension due to severe ascites. Nodular lesions of varying sizes up to 5 mm in diameter were distributed diffusely on the surface of the omentum, mesentery and parietal peritoneum. No neoplastic masses were detected in any visceral organ. The nodules were composed of proliferation of mono- or multi-layered epithelial-like cells occasionally showing papillary growth and sheets of small round or polygonal cells. Signet ring-like cells and tubular structures were occasionally present. Neoplastic cells were strongly positive to cytokeratin, and occasionally to vimentin. Based on gross and histopathological findings, this tumor was diagnosed as an epithelial type of peritoneal malignant mesothelioma, the first reported case in the non-human primates.
authors: Laboratory of Veterinary Pathology, Life and Environmental Sciences, Osaka Prefecture University, Sakai.Osaka, Japan.
authors: Jyoji
authors: J
authors: Yamate
authors: Akitada
authors: A
authors: Tomita
authors: Mitsuru
authors: M
authors: Kuwamura
authors: Fusako
authors: F
authors: Mitsunaga
authors: Shin
authors: S
authors: Nakamura
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000556:secondary / Q000662:veterinary; D000818:Animals; D001201:Ascites / Q000209:etiology / Q000473:pathology / Q000662:veterinary; D014408:Biomarkers, Tumor / Q000032:analysis; D003937:Diagnosis, Differential; D037901:Euthanasia, Animal; D017809:Fatal Outcome; D005260:Female; D019084:Fluorescent Antibody Technique, Indirect / Q000662:veterinary; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis / Q000662:veterinary; D008251:Macaca; D008654:Mesothelioma / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D009852:Omentum / Q000473:pathology; D010051:Ovarian Neoplasms / Q000175:diagnosis / Q000662:veterinary; D010534:Peritoneal Neoplasms / Q000150:complications / Q000473:pathology / Q000662:veterinary*
chemical_list: D014408:Biomarkers, Tumor