Fig. 1

a Left hand X-ray, showing multiple bulky cartilage cap in the distal region of the radius suggesting multiple osteochondromas (red arrow). b Right femur X-ray, showing an uninterrupted flow of cortex and medullary bone from the host bone into an area of new bone proliferation in the medial side of the distal femur (yellow arrow), confirming the hypothesis of multiple osteochondromas. c Bilateral hands X-rays of the girl’s mother, showing multiple osteochondromas (only a few of which outlined by blue arrows)