Microcystic Urothelial (Transitional Cell) Carcinoma
Differential Diagnosis
- Nested variant of urothelial carcinoma and urothelial carcinoma with small tubules
- Adenocarcinoma
- Urothelial carcinoma with glandular differentiation
- Florid cystitis cystica/glandularis
- Inverted papilloma
- Papilloma vs Nephrogenic Adenoma
| Nephrogenic Adenoma |
Urothelial Papilloma |
| Papillae lined by single layer of cells, frequently hobnailed |
Papillae lined by normal multilayered transitional epithelium |
| No umbrella cells |
Normal umbrella cells present |
| Usually associated with tubular submucosal component |
No associated tubular component |
