Atypical presentation of non-ossifying fibroma

Non-ossifying fibroma is a common benign bone lesion but extensive involvement of almost whole of the shaft of right tibia is a rare presentation. The patient was a young lady of 35 years admitted at the department of Orthopaedics in Bangabandhu Sheikh Mujib Medical University (BSMMU) on June 2006 with pain and swelling of right distal tibia and unable to walk without support, was diagnosed clinico-radiologically as a case of fibrous dysplasia. The lady was undergone surgery and biopsy confirmed a case of non-ossifying fibroma. Within the follow up period of 28 months, the patient was well with full functional limb and the lesion was also healed radiologically.