Renal cystic disease is made up of developmental, inherited and acquired abnormalities. The Potter classification is used to categorize the types of renal cystic disease.

Type I: Autosomal recessive infantile polycystic renal disease

Type II: Multicystic renal dysplasia

Type III: Autosomal dominant adult polycystic renal disease

Tpye IV: Obstructive cystic dysplasia

Below I will attach an image of IPKD in association with Meckel-Gruber syndrome confirmed at autopsy. This patient also had postaxial polydactyly and an occipital encephalocele.

The second case with two attachments is multicystic renal dysplasia. This baby was born at 39 weeks and expired due to pulmonary hypoplasia.