School ager with right scapular and right chest pain

Chest
CXR and CT of Ewing Sarcoma of the rib / Askin Tumor
CXR AP and lateral (above) show a large right sided chest mass whose obtuse angles with the chest wall suggest it is extrapleural in origin. Axial CT without contrast of the chest (below) shows the mass to be arising from a rib and to be causing periosteal reaction.

The diagnosis was Ewing sarcoma of the rib (Askin tumor).

Published