Osteochondroma of the calcaneus presenting as Haglund's deformity

Haglund's deformity is a symptomatic osseous prominence of the posterosuperior corner of the calcaneus creating posterior heel pain and swelling around the insertion of the Achilles tendon. We have experienced an exceptionally huge Haglund's deformity in a 22-year-old female who initially presented to us with a large painful bony heel mass that had developed over the last decade. We performed the surgical resection of the prominence and the pathology confirmed the diagnosis of calcaneal osteochondroma. To our best knowledge, such a gigantic Haglund's deformity caused by calcaneal osteochondroma has never been reported in any medical literature.