50447 | Bladder Papillary Lesions

Case ID: 777

Publication date: 18 Jan, 2025

Consensus grade: Papilloma

User	Diagnosis	Difficulty	Comment
Pathologist 1	Papilloma	Borderline higher
Pathologist 2	Papilloma	Typical
Pathologist 3	Papilloma	Typical
Pathologist 4	Papilloma	Borderline higher
Pathologist 5	Papilloma	Typical
Pathologist 6	Papilloma	Typical
Pathologist 7	Papilloma	Typical
Pathologist 8	Papilloma	Typical
Pathologist 9	Low-grade papillary urothelial carcinoma (LG-PUC)	Borderline lower
Pathologist 10	Papilloma	Borderline lower
Pathologist 11	PUNLMP	Borderline higher
Pathologist 12	Papilloma	Borderline higher	tricky, not sure about the diagnosis
Pathologist 13	Papilloma	Typical
Pathologist 14	Papilloma	Typical
Pathologist 15	Low-grade papillary urothelial carcinoma (LG-PUC)	Typical
Pathologist 16	Papilloma	Borderline higher
Pathologist 17	Low-grade papillary urothelial carcinoma (LG-PUC)	Typical	No specific comment.
Pathologist 18	Papilloma	Typical
Pathologist 19	Papilloma	Borderline higher
Pathologist 20	Papilloma	Borderline higher
Pathologist 21	Papilloma	Typical

Case description (by case creator):

The lesion is a papillary growth with central vascular core lined by urothelium of normal thickness and cytology. Umbrella cells show marked vacuolation.

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Consensus grade: Papilloma