To the Editor:Tumor-induced osteomalacia (TIO) is an extremely rare paraneoplastic syndrome that is characterized by hypophosphatemia and hyperphosphaturia.[1] Since TIO was first described in 1947,more than 500 cases have been reported worldwide.[2,3] TIO is an acquired hypophosphatemic osteomalacia caused by decreased phosphorus reabsorption in the renal tubules and increased renal phosphorus excretion.
作者单位:Department of Orthopedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China[1]Department of Endocrinology, Key Laboratory of Endocrinology, National Health and Family Planning Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China[2]Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China[3]