Periosteal osteoid osteoma of the distal femur

Abstract

Periosteal osteoid osteoma is extremely rare. The diagnosis is not always clear. We report a case of periosteal osteoid osteoma arising from the posterior surface of the right distal femur in a 21-year-old woman. After careful evaluation and excisional biopsy, histological examination confirmed the diagnosis of osteoid osteoma, showing the nidus, surrounding osteosclerosis, and catarrhal synovitis. The lesion was treated successfully with excision of the nidus.

Imaging spectrum of periosteal lesions – Pictorial essay

“…Tumors arising other than periosteum can also produce periosteal reaction [20,21]. In benign neoplasms of bone, particularly in osteoid osteoma, there is a small nidus (< 1.5 cm) and periosteal reaction is noted (Figure 18a) [22,23]. In Osteoblastoma, the radiolucent nidus is larger in diameter (> 2 cm) and compact periosteal reaction may be noted (Figure 18b) [24].…”