ABSTRACT
Benign fibrous mesotheliomas, more correctly called solitary pleural fibrous tumors, have no connection with malignant ones or with exposure to asbestos. They seem to arise from submesothelial fibroblasts (1). These tumors arise either from the parietal or the visceral pleura, often from a small stalk. They grow slowly, do not invade any tissues but rather push them aside, and can become very big before they give symptoms or are accidentally discovered. The main symptom is dyspnea simply due to the size of the tumor. Some patients can suffer from hypoglycemic attacks, and clubbing of the fingers also occurs. Rarely, chest pain is the symptom that causes the patient to go to the doctor.
