Renal tubular acidosis associated with basal ganglia calcification A case report

A rare case of renal tubular acidosis associated with hypoparathyroidism is reported. A 38-year-old man came to our department suffering from pain in his left thigh. Upon X-ray examination, subtrochanteric fracture of the left femur, osteosclerosis of spine and tubular bone, and basal ganglia calcification were seen. Upon biochemical examination, hypokalemia, hypocalcemia, hyperchloremia and metabolic acidosis were found. From the finding of NH4Cl loading test and biocarbonate loading test, this case was diagnosed as distal renal tubular acidosis. The finding of the i-PTH and Ellsworth-Howard test suggested that this case was associated with idiopathic hypoparathyroidism. The fracture was treated successfully with osteosynthesis.