Osteoid osteoma is very rarely located in the patella, and can represent a significant diagnostic challenge, resulting in a delay of treatment. Patients with osteoid osteoma of the patella often present with knee pain that is also a typical symptom of trauma or of other diseases such as arthritis, which are much more common than osteoid osteoma. We present two young male patients diagnosed with osteoid osteoma of the patella. Each of these patients had a history of intense knee pain; however, accurate diagnosis of osteoid osteoma in the patella had been delayed for more than one year. Computed tomography (CT) scans or magnetic resonance imaging (MRI) showed a circumscribed lesion of the patella in both patients, whereas X-ray examination (posteroanterior projection) was not able to detect the tumor. Different surgical procedures were performed in these patients for resection of the tumors, and the pathology findings confirmed the diagnosis of osteoid osteoma. Both patients recovered completely from surgery.
Adolescent ; Adult ; Humans ; Male ; Osteoma, Osteoid ; diagnosis ; diagnostic imaging ; surgery ; Patella ; diagnostic imaging ; pathology ; surgery ; Radiography

Our experience includes seven cases of ossifying fibroma. The condition also appears in the literature under diagnostic names such as congenital fibrous dysplasia, congenital osteitis fibrosa, congenital fibrous defect of the tibia, and osteofibrous dysplasia of the tibia and fibula. The lesions develop in childhood and are located in the diaphysis of the tibia, or fibula. Of seven patients, we performed wide excision with free vascularized fibular graft in five cases, wide resection of the distal one-third of the fibula in one case, and curettage and bone graft in one case. Two of the patients who had wide excision with free vascularized fibular graft had recurrence. One case of recurrence occurred where incomplete wide excision with free-vascularized fibular graft was performed because the lesion was too close to the distal epiphysis of the tibia. One of the patients who had curettage and bone graft also had recurrence. It was concluded that children who have an ossifying fibroma requiring surgery can safely be treated with wide excision with or without free-vascularized fibular graft.
Adolescent ; Bone Neoplasms/diagnosis/pathology/*surgery ; Case Report ; Child ; Female ; Fibroma/diagnosis/pathology/*surgery ; Human ; Male ; Osteoma/diagnosis/pathology/*surgery ; Tibia

OBJECTIVE: To summarize the experience of diagnosis and treatment on osteoma in the external auditory canal. METHOD: Retrospective study were undertaken in 26 patients with osteoma in the external auditory canal operated in author's unit. RESULT: Osteomas were removed through interauricular approach in all patients and confirmed by histopathological examination. The hearing of 22 patients with conductive hearing loss became normal after operation. The air conduction hearing threshold in 2 patients with mixed hearing loss improved average 15 dB and 20 dB respectively after operation. The follow up was more than 1 year, and no recurrence or complications had occurred. CONCLUSION Osteoma in the external auditory canal is an uncommon benign lesion. The method of choice in diagnosis is temporal bone CT scan. Osteoma must be distinguished from exostosis in the external auditory canal. Osteoma is confirmed by pathological diagnosis and surgery is the only method for treatment.
Adolescent ; Adult ; Bone Neoplasms ; diagnosis ; surgery ; Ear Canal ; pathology ; Female ; Humans ; Male ; Middle Aged ; Osteoma ; diagnosis ; surgery ; Retrospective Studies ; Young Adult