Posterior Scapular Osteochondroma in a Pediatric Patient: An Uncommon Presentation of a Common Benign Tumor

Osteochondroma is the most common benign bone tumor, usually arising from long bones. Scapular involvement is uncommon, and posterior surface presentation is particularly rare. Such lesions may lead to pain, cosmetic deformity, disturbance of scapulothoracic mechanics, and have a relatively higher risk of malignant transformation.

A 6-year-old boy presented with a progressively enlarging bony swelling over the posterior aspect of the left scapula associated with recent-onset pain and restriction of shoulder movements. Radiographs revealed a well-defined exophytic lesion with cortical and medullary continuity and a thin cartilage cap. Complete surgical excision was performed, and histopathology confirmed osteochondroma. Post-operative recovery was uneventful with symptomatic improvement.

Posterior scapular osteochondroma in children is rare but clinically relevant. Early diagnosis and timely surgical excision of symptomatic lesions result in excellent outcomes.