PMC4827879_01
Ankle images of the patient.. Notes: Localized, irregular osseous mass at the level of anteromedial talus and medial malleolus on AP and lateral ankle radiographs (A and B). Lobulated osteocartilaginous mass appearance in the vicinity of the medial malleolus at the medial aspect of the distal tibia, right side on the axial section of CT (C).. Abbreviations: AP, anterior-posterior; CT, computerized tomography.
tcrm-12-545Fig1.jpg
PMC4827879_01_tcrm-12-545Fig1.jpg
f1-tcrm-12-545
An osteocartilaginous mass (2.5 cm x2.0 cm x2.0 cm in size), localized at the distal end of the tibia and extending from the vicinity of the medial malleolus to the medial aspect of the talus, was observed using plain radiograph and computerized tomography (CT) (Figure 1).
Intraoperative view of patient.. Notes: Intraoperative appearance of osteocartilaginous lesion at medial malleolus and anteromedial aspect of talus in the ankle (A). View of the excised osteocartilaginous lesion (B).
tcrm-12-545Fig2.jpg
PMC4827879_01_tcrm-12-545Fig2.jpg
f2-tcrm-12-545
Four large osteocartilaginous lesions were removed from the talus and ankle joint (Figure 2).
Histopathological findings in Trevor disease.. Notes: Superficial hyaline cartilage layer, columnar chondrocytes (right side), and mature bone trabeculae containing osseous spicules and bone marrow (left side) (hematoxylin-eosin stain, magnification 400x).
tcrm-12-545Fig3.jpg
PMC4827879_01_tcrm-12-545Fig3.jpg
f3-tcrm-12-545
Histological examination revealed that the lesion was mostly hyperplastic cartilage with little osseous tissue, and these features were identical to that of osteochondroma (Figure 3).