Winging of Scapula: An Uncommon Presentation of a Common Tumor.

Neuromuscular causes of winging of scapula are well known, but winging and snapping of scapula may rarely be caused by space-occupying lesion of the thoracic wall. Although osteochondroma of scapula is rare, it is the most common neoplasm of scapula, and osteochondroma of ventral scapula may lead to pseudo-winging, snapping, and rib erosion on the same side. Owing to its rarity, we report two cases of osteochondroma of ventral scapula with complains of difficult scapulothoracic movement (snapping scapula) and pseudo-winging. After initial clinical and radiological investigations, wide local excision was done and diagnosis confirmed histopathologically. In a two-year follow-up, there is no recurrence, and symptoms of snapping and pseudo-winging disappeared completely. Pertaining to its asymptomatic nature and rare location, diagnosis of osteochondroma may be missed initially searching for some other neuromuscular disorders, and these cases should be reported to increase awareness and to execute proper surgical management.