Introduction: Benign bone tumors like osteochondroma are common during skeletal maturity occurring usually at the ends of long bones, such as the distal femur, proximal humerus, and proximal tibia. The tumor can occur in sessile or pedunculated forms. Mass lesions occurring around the ankle can lead to chronic pain, pathological fractures, progressive erosion, and scalloping of adjacent bone. This report highlights a case of a progressively enlarging bony swelling around the distal tibia with uncommon radiological and histological presentation managed with en bloc excision.
Case report: A 30-year-old male with 3 years of progressive bony enlargement without any history of significant trauma presented to our tertiary care hospital. The radiological and histological investigations were performed and many varied differentials were proposed. The lesion was provisionally diagnosed to be a case of an uncommon form of osteochondroma and en bloc excision was done. The patient followed up for a period of 6 months and the patient had uneventful recovery with no recurrence.
Conclusion: Osteochondromas in the distal tibia are infrequent occurrences among common skeletal tumors. Timely surgical intervention is recommended for symptomatic lesions or those causing compression or mass effects.
Keywords: Osteochondroma; benign; bizarre parosteal osteochondramatous proliferation; distal tibia; fibular deformation; tumor.
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