Brown tumour is seen in: (A) Hyperparathyroidism, (B) Hypoparathyroidism, (C) Hypothyroidism, (D) Hypehyroidism
Answer is A. Brown's tumour: This is an expansile bone lesion, a collection of osteoclasts. It commonly affects the maxilla or mandible, though any bone may be affected. Commonly seen in Hyperpathyroidism Ref: Maheshwari 6e pg 313.