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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Brown tumor is seen in
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The correct answer is  Primary hyperparathyroidism is a disease characterized by excessive secretion of parathormone which results in increased osteoclastic activity therby causing bone loss . The bone loss predisoses to microfractures and secondary hemorrhages that elicit an influx of macrophages and an ingrowth of reparative fibrous tissue, creating a mass of reactive tissue known as brown tumor . Ref: Robbins and cotrans 9e Pg 1102