Brown tumour is seen in -: (A) Hypothyroidism, (B) Hyperparathyroidism, (C) Hypoparathyroidism, (D) Hyperthyroidism
Answer is B. Brown's tumour is seen in Hyperparathyroidism. Its an expansile lytic lesion.This is a collection of osteoclasts. It commonly found in maxilla and mandible,other bones also affected. Other featurs are muktiple bone cysts,subperiosteal retraction of bones,salt and pepper appearence of skull in X-ray.