FGF23 and osteomalacia: Post-operatively, patients exhibited normalization of serum phosphorus, in addition to significant improvement in their ambulatory function.<h4>Conclusion</h4>Hypophosphatemia with elevated FGF23 and low 1,25-dihydroxyvitamin D level in the setting of multiple atraumatic fractures necessitates careful evaluation for biochemical evidence of tumor-induced osteomalacia.