患者男，２８岁。肘部活动受限及双臀部对称性骨性包块多年，腰酸背痛加重半个月。体检：双肘部粗大并呈屈曲状，屈伸功能消失；两髋部轻度外翻；臀部两侧可触及对称性、表面光滑的骨性突起状包块；无压痛；双手拇、食指甲凹陷，有纵裂形沟裂；肾区有叩痛；瞳孔周围可见褐色点 Male patient, 28 years old. Elbow activity is limited and bilateral hip symmetry Osteoid mass for many years, backache backache aggravate half a month. Physical examination: the elbows are thick and buckled, the function of flexion and extension disappears; the two hips are mildly valgus; the buttocks are symmetrical on both sides and the surface is smooth and bony protrusion mass; no tenderness; both hands and nails , A longitudinal crack-shaped fissure; kidney area has percussion pain; pupil visible brown spots around