A Pediatric Radiology textbook and Pediatric Radiology digital library
Osteochondroma
Etiology: piece of growth plate separates + lays down cartilage off of normal axis of development
Imaging: arise from metaphysis of tubular long bones, cystic growth on bony stalk / excresense away from metaphysis / growth plate, can also be sessile
Complications: 1-2% degenerate into chondrosarcoma
Cases of Osteochonroma
CXR PA shows a calcific density in the head of the left third rib. Contiguous images from an axial CT without contrast of the chest shows a bony outgrowth at the proximal aspect of the left third rib posteriorly.