title: Metastasis of pleural mesothelioma presenting as bleeding colonic polyp.
abstract: We report the case of a 72-year-old woman with metastatic malignant mesothelioma presenting as right colonic polyp. She was diagnosed with malignant pleural mesothelioma 2 years previously and underwent surgery, radiotherapy, and chemotherapy. After 2 years with a negative follow-up, she was admitted to the infectious disease department for malaria and severe anaemia. A computed tomographic scan and a colonoscopy showed a huge bleeding polypoid lesion in the right colon diagnosed as adenocarcinoma. She underwent a right hemicolectomy; a pathologic examination found neoplastic cell population positive to anti-cytokeratin7, anti-calretinin, anti-vimentin, and negative for anti-cytokeratin 20, MOC-31, and thyroid transcription factor 1, providing a diagnosis of metastatic mesothelioma.
authors: Department of Surgery, "P. Valdoni" - Eleonora Lorrillard, Spencer Cenci Foundation, University "Sapienza" of Rome, Rome, Italy. simone.sibio@uniroma1.it
authors: Simone
authors: S
authors: Sibio
authors: Paolo
authors: P
authors: Sammartino
authors: Fabio
authors: F
authors: Accarpio
authors: Daniele
authors: D
authors: Biacchi
authors: Tommaso
authors: T
authors: Cornali
authors: Maurizio
authors: M
authors: Cardi
authors: Franco
authors: F
authors: Iafrate
authors: Angelo
authors: A
authors: Di Giorgio
mesh_terms: D000368:Aged; D003110:Colonic Neoplasms / Q000150:complications / Q000556:secondary*; D003111:Colonic Polyps / Q000209:etiology; D005260:Female; D006470:Hemorrhage / Q000209:etiology; D006801:Humans; D008654:Mesothelioma / Q000150:complications / Q000556:secondary*; D010997:Pleural Neoplasms / Q000473:pathology*