A case of polypoid and papillary cystitis mimicking an advanced bladder carcinoma with invasion of perivesical fat

Abstract

A rare case of polypoid and papillary cystitis without a history of catheterization is reported. A 69-year-old man was admitted to our hospital because of pain during urination and gross hematuria. The cystscopic and imaging findings including ultrasound, CT, and MR image showed an irregular wall thickening and stranding in the perivesical fat, which indicated an advanced bladder carcinoma, but histopathological findings obtained by transurethral resection revealed polypoid and papillary cystitis. Such benign lesions need to be discussed in the differential diagnosis of patients with bladder tumor to avoid excessive resection.

Polypoid Cystitis and Bilateral Hydronephrosis Mimicking Urothelial Carcinoma

“…The usual reported management of polypoid cystitis is that of surgical resection and subsequent resolution, 4 but concurrent medical therapy and treatment of upper tract obstruction are not well documented, including the role of corticosteroids in decreasing inflammation. Our patient did not have resolution of the cystitis or ureteral obstruction postresection, therefore, making the case unique.…”

Untitled

“…Las manifestaciones clínicas incluyen síntomas de vaciamiento vesical y hematuria macroscópica; no obstante, la mayoría de los casos no manifiesta lesiones. 4 La cistitis polipoide puede confundirse con alguna neoplasia urotelial papilar; por lo tanto, se requiere efectuar el estudio histopatológico para establecer el diagnóstico preciso. Los hallazgos más sobresalientes incluyen: fondo edematoso con grosor urotelial relativamente normal y lesiones menores de 5 cm.…”

Morphological Characteristics and Differential Diagnosis of Urothelial Bladder Carcinomas: A Literature Review

“…3.3 Polypoid / papillary cystitis -is a benign polypoid or papillary inflammatory lesion affecting the mucous of the bladder seen commonly in patients with indwelling catheter. Histologically poliopid / papillary cystitis is characterized by thin, finger-like papillae with highly edematous fibrovascular core with indistinct branching of the papillae -without anastomosis and fusion, as in some instances can be found and reactive epithelial atypia, but with no abnormal mitotic figures [Ozaki К et al, 2014;Kwok JL et al, 2019].…”