Course Map: Epithelial Abnormalities: Cystitis Cystica

Cystitis Cystica
Nests of von Brunn usually will show central lumina which may be small or large. Thus, the term "proliferative cystitis," applies to those lesions which consist of von Brunn nests and/or cystitis cystica.
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	Figure 1: Cystitis cystica with columnar cells on the luminal side (arrows).
	Figure 2: Florid, tumor-like example of proliferative cystitis with cystitis cystica.
	Figure 3: Cystitis cystica.
	Figure 4: This shows more prominent cystic dilatations of the nests.