Solitary fibrous tumor is a rare pathology of the pleura that frequently arises from the visceral pleura. It is usually a benign tumor, but 10-20% of the cases may have a malign course. Clinical findings usually vary with the size and the location of the tumor. In the early stages of the disease, most of the cases are asymptomatic. However, as the tumor enlarges, respiratory symptoms including cough, chest pain, and dyspnea, as well as extrapulmonary signs such as hypoglycemia and clubbing can be seen. To make a definitive diagnosis, generally the total excision of the mass through a thoracotomy should be performed. Although surgical resection is adequate for the treatment, there is a small risk of recurrence after surgery. The tumor histologically consists of fibroblast-like and connective tissue cells. The tumor cells usually stain positively with CD34. In this article, the clinical findings and the radiological, histological, and immunohistochemical characteristics of a patient whose diagnosis was reported as the solitary fibrous tumor of the pleura after being operated on for a mass in the right hemothorax are discussed in view of the literature.

Keywords : Mesothelioma; pleura; solitary fibrous tumor