K89 | Prostate cancer grading

Case ID: 832

Publication date: 22 Apr, 2026

Consensus grade: GS 4+4=8 (ISUP 4)

User	Diagnosis	Difficulty	Comment
Pathologist 1	GS 4+4=8 (ISUP 4)	Typical
Pathologist 2	GS 4+4=8 (ISUP 4)	Typical
Pathologist 3	GS 4+4=8 (ISUP 4)	Typical
Pathologist 4	GS 4+4=8 (ISUP 4)	Typical
Pathologist 5	GS 4+4=8 (ISUP 4)	Borderline lower	Agree
Pathologist 6	GS 4+4=8 (ISUP 4)	Typical	Very minor element of pattern 3 which I have ignored
Pathologist 7	GS 4+4=8 (ISUP 4)	Typical
Pathologist 8	GS 4+4=8 (ISUP 4)	Typical
Pathologist 9	GS 4+4=8 (ISUP 4)	Typical	some pattern 3 glands but ignorable
Pathologist 10	GS 4+4=8 (ISUP 4)	Typical	massifs and cribriform, no 3 there, but for me it is not 5 yet
Pathologist 11	GS 4+4=8 (ISUP 4)	Typical
Pathologist 12	GS 4+4=8 (ISUP 4)	Typical
Pathologist 13	GS 4+4=8 (ISUP 4)	Typical
Pathologist 14	GS 4+4=8 (ISUP 4)	Borderline lower	Good example
Pathologist 15	GS 4+4=8 (ISUP 4)	Typical
Pathologist 16	GS 4+4=8 (ISUP 4)	Typical
Pathologist 17	GS 4+4=8 (ISUP 4)	Typical
Pathologist 18	GS 4+4=8 (ISUP 4)	Typical
Pathologist 19	GS 4+4=8 (ISUP 4)	Typical
Pathologist 20	GS 4+4=8 (ISUP 4)	Typical
Pathologist 21	GS 4+4=8 (ISUP 4)	Typical
Pathologist 22	GS 4+4=8 (ISUP 4)	Typical
Pathologist 23	GS 4+4=8 (ISUP 4)	Typical
Pathologist 24	GS 4+4=8 (ISUP 4)	Typical

Case description (by case creator):

Large areas with fused glands. Almost no individual glands.

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