Giant cell tumor arising from anterior arc of rib

Abstract

Giant cell tumor of bone also known as Osteoclastoma has only recently been included in the diagnostic purview of the cytopathologist. It is a benign but locally aggressive neoplasm most commonly found in the epiphysis or metaphyseal-epiphyseal region of long bones. Rarely, it can occur on the ribs, usually on the posterior aspect i.e. head and tubercle of the ribs. We, therefore report a case of giant cell tumor arising from the anterior arc of the rib, diagnosed on fine needle aspiration cytology.