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Journal of Case Reports
Ischium: A Rare Location for Osteoid Osteoma
Deepak Kumar, Lokesh Kumar SN
Department of Orthopaedics, Postgraduate Institute of Medical Education and Research, Chandigarh-160012, India.
Corresponding Author:
Dr. Lokesh Kumar SN
Email: hi1loke@gmail.com 
Received: 25-SEP-2017 Accepted: 29-NOV-2017 Published Online: 25-DEC-2017
DOI: http://dx.doi.org/10.17659/01.2017.0110
Abstract
Background: Osteoid osteoma is a benign osteoblastic tumor of unknown etiology constituting 10-12% of benign bone tumors. Pelvic involvement has been described mostly in acetabulum. Case Report: 42 years old male patient presented with history of fall and pain in right hip region. X-ray showed a well-circumscribed lytic lesion with central rounded radiolucent nidus in the right ischial tuberosity with surrounding bone sclerosis. Conclusion: Osteoblastoma is a distinct benign tumor to be considered as a differential. Ischial tuberosity is a rare location for osteoid osteoma. This unusual location for this tumor combined with altered clinical symptoms leads to late diagnosis.
Keywords : Acetabulum, Osteoblastoma, Osteoid Osteoma, Pain, Pelvis, Pelvic Neoplasm.
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