Iliac Subperiosteal Hematoma with Ossification in a 15-Year-Old Boy

A 15-year-old boy was admitted to our emergency department with pain in the hip and coccyx. He had sustained an injury from slipping on an icy road the day before. His medical history was unremarkable, and vital signs were within normal limits. Physical examination revealed focal tenderness in the left iliac area. On pelvic radiography, fracture of the left pelvic bone was suspected (Figure 1); however, pelvic computed tomography (CT) showed no evidence of acute fracture of the coccyx and pelvic bone.

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