Premise: The dominant features are polyuria, polydipsia and growth retardation. Diagnosis is based on the family history and renal biopsy, the cysts rarely being visualized by imaging techniques. Medullary sponge kidney is an uncommon condition that usually presents with renal colic or haem aturia
Statement: Medullary sponge kidney is a rare condition that usually presents with renal colic or haem aturia
Relationship: entailment