A case of chondrosarcoma of rib origin developing in the infradiaphragmatic space

Abstract

A 54-year-old female was noted to have an abnormal shadow on a chest radiograph. Chest CT showed a low-density mass arising from the left 9th rib, and chest MRI showed a low-intensity mass in T1-weighted images, and a high-intensity mass in T2-weighted images. We suspected the tumor to be a chondrosarcoma of rib origin, and performed a wide resection of the left 8th and 9th ribs and the diaphragm. The tumor was localized at the infradiaphragmatic space, without peritoneal invasion. The defect of the chest wall was reconstructed with an polytetrafluoroethylene sheet. A histological examination revealed grade 2 chondrosarcoma.