A Case of Benign Multiple Localized Fibrous Tumor of the Pleura

Background. We report an extremely rare case of multiple localized fibrous tumor of the pleura (LFTP). Case. A 54-year-old woman presented with an abnormal shadow in the right lower lung field on chest X-ray. Chest CT scan showed a mass in the right hemithorax. Preoperative CT-guided percutaneous transthoracic aspiration cytology revealed Class III cells, and she underwent tumor resection because of the possibility of malignancy. Intraoperative findings revealed three extrapulmonary tumors in the right hemithorax. One of them, 5 cm in diameter, was attached by a pedicle to the diaphragm. The others, 10 mm in diameter, arose from the parietal pleura. Postoperative pathological diagnosis, including immunohistochemical study, revealed benign LFTP. Conclusion. Reports of multiple LFTP are rare and the cause of multiple growth is still unknown. Even though such tumors are histologically benign, local recurrence may occur after removal of LFTP. We suggest that lifelong follow-up is required because of the possibility of recurrence.