Osteoid Osteoma of the Proximal Phalanx of the Great Toe in a 13-Year-Old Female Patient

Abstract

Osteoid osteoma (OO) is a benign osteoblastic bone tumor typically involving the diaphysis or metaphysis in long tubular bones. OO in phalanges of the great toe has been rarely reported, and it is often challenging to differentiate with subacute osteomyelitis, bone abscess, or osteoblastoma. This case report describes an uncommon case of a 13-year-old female patient with subperiosteal OO in the proximal phalanx of the great toe. The atypical location of OO should be familiarized to include appropriate differential diagnosis and to ensure accurate diagnosis by radiologic evaluations. Surgical excision remains the benchmark for the treatment of OO with its advantages on direct visualization and histologic confirmation for the diagnosis.

Great Toe Osteoid Osteoma with Atypical Presentation: A Case Report

“…Osteoid osteoma of the foot can have symptoms of local warmth and swelling with erythema, with more suspicion of an infectious etiology due to its involvement of cancellous bone in the phalanges with thin soft tissue coverage [ 1 ]. Seo et al [ 2 ] in their case report also presented a pediatric patient with chronic foot pain due to osteoid osteoma. Such presentation of osteoid osteoma at an atypical location results in challenging differentials, more so in favor of osteomyelitis or abscess.…”

“…Osteoid osteoma is a common benign osteoblastic lesion of the bone. It accounts for 10–12% of benign bone tumors, and its incidence in affecting the foot and hallux is 2% [ 1 , 2 ]. It commonly affects the cortex of the long bones.…”