Solitary fibrous tumours of the pleura

Seven cases of solitary fibrous tumours of the pleura are here reported, formerly named benign fibrous mesotheliomas. Histologically, these tumours are formed by fusiform cells with a minimal cellular pleomorfism and absence of mitosis. These tumours cause scarce symptoms which are usually diagnosed as a casual finding when a chest X-ray is performed on account of other cause. Treatment should be surgical, with removal of all tumoral mass, thus avoiding its growth and the possibility of the reported degeneration towards malignancy.