Osteopetrosis, Hypophosphatemia, and Phosphaturia in a Young Man: A Case Presentation and Differential Diagnosis

Table 1

Hypophosphatemia [12].

Decreased intestinal absorption	Internal Redistribution	Increased urinary excretion
Secretory diarrhea	Respiratory alkalosis	Hyperparathyroidism
Steatorrhea	Refeeding of malnourished patients	Fanconi syndrome
Vitamin D deficiency/resistance	Diabetic Ketoacidosis	X-linked hypophosphatemia
Phosphate binders	Rapid cell proliferation/uptake	Autosomal dominant hypophosphatemic rickets
Severe dietary phosphate restriction	Hungry bone syndrome	Tumor associated osteomalacia
		Fibrous dysplasia
		Diuretics (loop, thiazide, CAI)
		Kidney transplant
		PTHRP

*Table adapted from [12].