Tumor-Induced Osteomalacia- Like Syndrome with Rickets and Infantile Hepatic Hemangioendothelioma.

Tumor-induced osteomalacia (TIO), a rare paraneoplastic syndrome is seen in association with the overproduction of fibroblast growth factor-23 (FGF-23) by certain mesenchymal tumors in adults. In children, these phosphaturic mesenchymal tumors produce features of rickets similar to TIO. This condition is characterized by elevated blood levels of FGF-23, low phosphate, low or normal active vitamin D, and high alkaline phosphatase.