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Welcome to Pathology Imagebase, a tool for standardization of pathology. This website has been created by the International Society of Urological Pathology (ISUP). A panel of leading international experts in GU pathology continuously upload representative microphotographs from urological pathology. The images undergo independent review by panel members and consensus cases are presented here. Our purpose is to obtain an international reference for grading, staging and tumor classification. As member of ISUP you have full access to all images that have been approved by the expert panel. We hope that this tool will help to improve the quality of health care for patients with urological cancer all over the world.

The International Society of Urological Pathology (ISUP) is the international professional organization for uropathology. Our aim is to issue guidelines for the practice of urological pathology and to provide educational activities for pathologists around the world. ISUP is a companion society of The United States and Canadian Academy of Pathology (USCAP).

Prostate cancer grading

Grading of prostatic adenocarcinoma: ISUP grade 1 – 5.

Member status: Guest
Open cases: 10

Bladder Papillary Lesions

Classification of papillary lesions of the bladder: papilloma, PUNLMP, low-grade and high-grade urothelial carcinoma.

Member status: Guest
Open cases: 10

Bladder Flat Lesions

Classification of flat lesions of the bladder: reactive atypia, atypia/dysplasia, carcinoma in situ.

Member status: Guest
Open cases: 9

Classification of renal tumors

Diagnosis of subtypes of renal tumors

Member status: Guest
Open cases: 13

Renal tumor grading

Renal tumor grading

Member status: Guest
Open cases: 4