Bizarre parosteal osteochondromatous proliferation
Referred by GP with chronic left foot pain. Tender irregularity on examination at the base of the 2nd and 3rd toes. No history of trauma.
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2 cm irregular exophytic lesion arising from the proximal phalanx of the second toe causing separation of the second and third toes. It appears to contain chondroid matrix.
Mild overlying soft tissue swelling is noted.
Degenerative changes in the first metatarsophalangeal joint and several articulations of the midfoot.
No acute fracture.
Differential diagnosis for the lesion includes:
- Kershen LM, Schucany WG, Gilbert NF. Nora’s lesion: bizarre parosteal osteochondromatous proliferation of the tibia. Proceedings (Baylor University Medical Center). 2012;25(4):369-371.