<prompt> Brown tumour is found inHypoparathyroidismHyperparathyroidismHypocalcemiaHypothyroidism  <response>: Hyper parathyroidism 990- CMDT-08 1765-H17thHyper parathyroidism causes a loss of cortical bone and again of trabecular bone. Osteitis fibrosa cystica may present as pathologic fracture or as brown tumours or cysts of Jaw.More commonly, patients have bone pain and arthralgia 