Extraskeletal chondroma on the sole of the foot

• Main Authors: Vaseenon T., Cheewawattanachai C., Pattamapaspong N., Settakorn J., Leerapun T.
• Format: Article
• Published: SAGE Publications Ltd 2015
• Subjects: Orthopedics and Sports Medicine; Medicine (all); Surgery; Podiatry
• Online Access: http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84922069849&origin=inward; http://cmuir.cmu.ac.th/handle/6653943832/38375
• Institution: Chiang Mai University

UNLABELLED: A 47-year-old female presented with a solitary mass located in the plantar region of her left foot. The mass, which she noticed 2 years ago, grew gradually and caused increasing pain when bearing weight. Physical examination showed a 3.5-cm diameter tender nonmobile mass with firm consistency in the midplantar region. Radiographs showed a ring-like calcification compatible with cartilage tissue. Magnetic resonance imaging revealed a lobulated mass with a hypointense signal on T1-weighted images and a hyperintense signal on T2-weighted images in the mid-substance of the plantar fascia. After a skin incision was performed, the mass was dissected from the skin and subcutaneous tissue. Then, a marginal excision was performed. The histological assessment reported chondrocytes within lacunae embedded in a chondroid matrix with focal calcification. The definitive diagnosis was extraskeletal chondroma. Plantar pain resolved within 3 months and no recurrence was found at the 1-year follow-up. LEVEL OF EVIDENCE: Therapeutic Level IV, Case Report.