International Journal of Academic Health and Medical Research (IJAHMR)   Year: 2022 | Volume: 6 | Issue: 7 | Page No.: 46-51 Brown Tumors of the Tibia Secondary to Hyperparathyroidism Download PDF Thierno Souleymane BAH , Khalil Sahbani, Herbert Ngouabe Mbongo, Faical Oudanane, Hamza Lahlou, Kamal Lahrach, Amine Marzouki, Boutayeb Fawzi Abstract: The brown tumor is a non-neoplastic lesion resulting from an abnormality in the bone metabolism of a primary, secondary or tertiary hyperparathyroidism. These osteoclastomas are rare, historical, found in 1.5 to 1.7% of secondary hyperparathyroidism, the most frequent located are the long bones, the ribs, the mandible, the pelvis, the mandible and the spine. These tumors can be asymptomatic or manifest as osteolytic bone pain that can mimic a malignant bone tumor or pathological fractures. The diagnosis is based on biochemistry and radiology. Some authors assume that spontaneous regression is possible after the correction of hyperparathyroidism and for others the first step consisted in surgical excision of the tumor in order to stop bone destruction. Recurrences are possible especially with medical treatment.