Morphological types
spherical renal cysts
elongated renal cysts
According to cyst types
renal glomerular cysts (glomerulocysts)
renal tubular cysts (tubulocysts)
renal simple cysts
renal peripheral cortical cysts
renal tumoral cysts (renal cystic tumors)
According to cysts localization
renal medullary cysts
renal cortical cysts
renal diffuse cysts
According to the number of cysts
unique renal cyst (unilocular renal cyst)
multiple renal cysts (oligocystic kidneys)
diffuse renal cysts (multicystic kidneys)
Etiology
A. Renal cysts of embryonic origin
renal simple cysts
calyceal diverticula or pelvic diverticula
renal cystic diseases
renal cysts associated with malformative syndromes and genetic diseases
B. Renal cysts of nonembryonic origin
retention renal cysts
inflammatory renal cysts
parasitic renal cysts
Differential diagnosis
tumoral renal cysts (renal cystic tumors)
See also
fetal renal cysts (fetal multicystic kidneys)