Abstract
BackgroundWe report an extremely rare case of resection of localized biphasic malignant peritoneal mesothelioma of the transverse colon.Case reportComputed tomography and magnetic resonance imaging in a 72-year-old man showed a tumor with enhanced borders consistent with the transverse colon. Colonoscopy showed ulcerative lesions in the transverse colon, but histological examination showed no malignancy. A gastrointestinal stromal tumor was strongly suspected, so an extended right hemicolectomy was performed. Histopathological examination showed that the tumor was a localized malignant peritoneal mesothelioma of the transverse colon. The patient did not receive postoperative chemotherapy and died 18 months after surgery.ConclusionsThe number of patients with malignant mesotheliomas is predicted to increase in the future both in Japan and in western countries. We report this case due to its probable usefulness in future studies pertaining to the diagnosis and treatment of malignant mesotheliomas.
Highlights
We report an extremely rare case of resection of localized biphasic malignant peritoneal mesothelioma of the transverse colon.Case report: Computed tomography and magnetic resonance imaging in a 72-year-old man showed a tumor with enhanced borders consistent with the transverse colon
The number of patients with malignant mesotheliomas is predicted to increase in the future both in Japan and in western countries
We report this case due to its probable usefulness in future studies pertaining to the diagnosis and treatment of malignant mesotheliomas
Summary
The number of patients with malignant mesothelioma is estimated to increase in the future; there will be an increasing number of opportunities to experience cases of localized malignant peritoneal mesothelioma, such as the our case. Studies containing larger numbers of cases are needed to improve the prognosis. We believe that this report will be useful for the future clinical diagnosis and treatment of the disease. Consent Written informed consent was obtained from the patient’s family for the publication of this case report and any accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal. Leigh J, Davidson P, Hendrie L, Berry D: Malignant mesothelioma in Australia, 1945–2000. Weill H, Hughes JM, Churg AM: Changing trends in US mesothelioma incidence.
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