A patient has been diagnosed with nephrocalcinosis but is suffering from nephrolithiasis.?

Stone formers. Nephrolithiasis means kidney stones. Nephrocalcinosis is a condition of depositing calcium into the tissue/collecting systems/tubules of either the cortex (outer portion) or medulla (inner portion) of the kidney - this can lead to stone formation. Corticol and medullary nephrocalcinosis have different mechanisms/causes and are associated with different physiologic/anatomic conditions (eg msk).