Postsurgical Necrobiotic Granuloma of Urinary Bladder
Lesion composed of spindle and epithelioid histiocytes arranged in a palisaded pattern with central necrosis, in which multinucleated giant cells are also present.
It is a common finding in bladders following transurethral tumor resection.
Fifth to sixth decade
Most cases reported in the prostate follow transurethral resection of the prostate due to benign prostatic hyperplasia (Eyre et al. 1986). This type of granulomas is, therefore, rare, in other genitourinary locations.
The lesion when properly diagnosed microscopically does not require treatment.
Lesions measuring 0.5–2 cm, single or multiple
CD68-positive immunohistochemical staining of palisaded histiocytes