Rickets in adult cystic fibrosis with myopathy, pancreatic insufficiency and proximal renal tubular dysfunction.

Rickets is reported in a 19 year old white man with cystic 
fibrosis in whom pancreatic and hepatic involvement was advanced. There was 
evidence of secondary hyperparathyroidism with proximal renal tubular acidosis, aminoaciduria, phosphaturia 
and hypophosphatemia. Treatment with oral pancreatic and parenteral vitamin D supplements 
led to full recovery of the rachitic syndrome and the proximal 
renal tubular dysfunction. 