Chondrosarcoma of Rib on Fine Needle Aspiration Cytology – Rare Site

Background: fine needle aspiration cytology (fnac) is effective in the diagnosis of bone tumors when combined with careful radiologic and clinical evaluation. chondrosarcomas often arise in the pelvis or bones of the trunk, but primary chest wall (rib) chondrosarcomas are relatively rare. case reports: this is a case of a patient with a chondrosarcoma arising in the left lower rib who underwent resection. the patient was a 30-year-old man with a 10x8x6cm tumor in the anterior chest wall of the left side lower rib. on fine needle aspira tion cytology (fnac) of the mass on the anterior chest wall, a diagnosis of a low grade chondrosarcoma was made. this was confirmed his- topathologically as a dedifferentiated chondrosarcoma. macroscopically on excision of gray to pink lobulated mass with adjacent soft tis sue and bone with foci of hemorrhage and ne crosis the mass measured (m) 10x 8x 6 cm. incidence of chondrosarcoma peaks in the 5th to 6th decade and most commonly involves the femur, humerus, pelvis, and scapula. it rarely involves rib