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Difference between revisions of "Inverted urothelial papilloma"
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'''Inverted urothelial papilloma''', also '''inverted papilloma''', is a benign [[urothelium|urothelial]] lesion that may be confused with [[urothelial carcinoma]]. | '''Inverted urothelial papilloma''', also '''inverted papilloma''', is a benign [[urothelium|urothelial]] lesion that may be confused with [[urothelial carcinoma]]. | ||
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DDx: | DDx: | ||
*[[Low grade papillary urothelial carcinoma]] with an inverted growth pattern. | *[[Low grade papillary urothelial carcinoma]] with an inverted growth pattern. | ||
*[[Cystitis cystica]]. | |||
===Images=== | ===Images=== | ||
====Case 1==== | |||
<gallery> | <gallery> | ||
Image:Inverted_papilloma_high_mag.jpg | Inverted papilloma - high mag. (WC/Nephron) | Image:Inverted_papilloma_high_mag.jpg | Inverted papilloma - high mag. (WC/Nephron) | ||
Image:Inverted_papilloma_intermed_mag.jpg | Inverted papilloma - intermed. mag. (WC/Nephron) | Image:Inverted_papilloma_intermed_mag.jpg | Inverted papilloma - intermed. mag. (WC/Nephron) | ||
</gallery> | |||
====Case 2==== | |||
<gallery> | |||
Image: Bladder inverted papilloma histopathology (1).jpg | IUP. (WC/KGH) | |||
Image: Bladder inverted papilloma histopathology (2).jpg | IUP. (WC/KGH) | |||
Image: Bladder inverted papilloma histopathology (3).jpg | IUP. (WC/KGH) | |||
</gallery> | </gallery> | ||
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==See also== | ==See also== | ||
*[[Urothelium]]. | *[[Urothelium]]. | ||
*[[Urothelial papilloma]]. | |||
*[[Cystitis cystica]]. | *[[Cystitis cystica]]. | ||
==Sign out== | |||
<pre> | |||
Bladder Tumour, Transurthral Resection: | |||
- Inverted papilloma. | |||
</pre> | |||
===Micro=== | |||
The sections show urothelial mucosa with a densely packed urothelial nests with peripheral palisading. The cells of the urothelial nests are bland. Proliferative activity is not apparent. Definite papillae are absent. No exophytic component is apparent. | |||
==References== | ==References== | ||