Cytological Diagnosis of Ewing Sarcoma – Clavicle.

Ewing sarcoma is a rare malignant round cell tumor of the bone. It is the second most common primary malignant tumor of bone found in children. It commonly affects long bones, pelvis and ribs. An 11 year old boy presented with painful swelling at the medial end of left clavicle. X-ray revealed a diaphyseal lesion of the medial end of the left clavicle with destruction of bone and mottled appearance. FNAC was done and reported as Malignant round cell tumor suggestive of Ewing sarcoma. Histopathologically the diagnosis of Ewing sarcoma was confirmed with special stains. Ewing sarcoma affecting clavicle is uncommon. Clavicle can be often resected with no need of reconstruction in young children.