Bladder, ureter & renal pelvis
Other nonneoplastic
Postoperative granulomas
Author: Monika Roychowdhury, M.D.
Last author update: 1 December 2014
Last staff update: 12 November 2021
Copyright: 2003-2023, PathologyOutlines.com, Inc.
PubMed Search: Post operative granulomas [title]
Table of Contents
Definition / general | Etiology | Microscopic (histologic) description | Microscopic (histologic) images | Differential diagnosisCite this page: Roychowdhury M. Postoperative granulomas. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/bladderpostopgran.html. Accessed March 20th, 2023.
Definition / general
- Reactive lesion that occurs after catheterization or diathermy (Acta Pathol Jpn 1986;36:1813)
- Foreign body granulomas may occur postbladder neck suspension (Int Urol Nephrol 2001;33:351) or other surgery (Am J Clin Path 1986;86:430)
Etiology
- May be due to metals deposited during diathermy, local reaction to tissue necrosis or hypersensitivity reaction (Urology 1990;35:454)
- Includes “starch” granulomas (Urology 1976;8:507)
Microscopic (histologic) description
- Palisading histiocytes or giant cells surrounding central necrosis (resembling rheumatoid nodules) or foreign body type granuloma
- Lesions heal by fibrous scarring
Microscopic (histologic) images
Images hosted on other servers:
Postresection
Differential diagnosis
- Granulomatous cystitis: terms may overlap; often refers to patients with infectious etiology and no distinct mass
