An interesting mediastinal cyst case: Benign cystic mesothelioma.

Anterior mediastinal, well-defined, ametabolic cystic lesion was detected incidentally in a 69-year-old male patient. Uniportal videothoracoscopic surgery was performed to the lesion for diagnosis and treatment purposes. Histopathological findings were in accordance with "benign cystic mesothelioma". Benign cystic mesothelioma has been defined in the abdomen, particularly among females of reproductive age. Benign cystic mesothelioma originating from mediastinal pleura is very rare entity and was not defined in the literature. To our knowledge, we present this rare and interesting mediastinal cystic lesion for the first time in the literature.