A 40-year-old woman with recurrent calcium phosphate stones has a consistently alkaline urine (pH 7.2-7.5) and a mild non-anion gap metabolic

Question

A 40-year-old woman with recurrent calcium phosphate stones has a consistently alkaline urine (pH 7.2-7.5) and a mild non-anion gap metabolic acidosis (bicarbonate 19 mmol/L). Serum potassium is 3.0 mmol/L. What is the most likely underlying diagnosis?

Accepted Answer

Incomplete distal (type 1) renal tubular acidosis

Answer

Idiopathic hypercalciuria

Answer

Proximal RTA

Answer

Primary hyperparathyroidism

Answer

Infection stones with urease-producing organism

Calcium Phosphate Stones Distal RTA — ESENeph MCQ

A 40-year-old woman with recurrent calcium phosphate stones has a consistently alkaline urine (pH 7.2-7.5) and a mild non-anion gap metabolic acidosis (bicarbonate 19 mmol/L). Serum potassium is 3.0 mmol/L. What is the most likely underlying diagnosis?