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Difference between revisions of "Nasal polyps"
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- Inflamed edematous sinonasal mucosa with abundant neutrophils and fragments of bone. | - Inflamed edematous sinonasal mucosa with abundant neutrophils and fragments of bone. | ||
- Negative for malignancy. | - Negative for malignancy. | ||
</pre> | |||
====Alternate==== | |||
<pre> | |||
A. Contents of Left Ethmoid Sinus, Excision: | |||
- Mildly inflamed sinonasal mucosa with bone and fibrous tissue. | |||
- NEGATIVE for malignancy. | |||
B. Contents of Right Ethmoid Sinus, Excision: | |||
- Mildly inflamed sinonasal mucosa with bone and fibrous tissue. | |||
- NEGATIVE for malignancy. | |||
</pre> | </pre> | ||
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**[[Wegener's granulomatosis]]. | **[[Wegener's granulomatosis]]. | ||
**[[Churg-Strauss syndrome]]. | **[[Churg-Strauss syndrome]]. | ||
*[[Biphenotypic sinonasal sarcoma]] - has hypercellular stroma. | |||
===Sign out=== | ===Sign out=== | ||
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*Oncocytes - '''key feature'''. | *Oncocytes - '''key feature'''. | ||
*Exophytic or endophytic growth pattern. | *Exophytic or endophytic growth pattern. | ||
==Antrochoanal polyp== | |||
*Abbreviated ''ACP''. | |||
===General=== | |||
*Benign.<ref name=pmid15626248>{{cite journal |authors=Maldonado M, Martínez A, Alobid I, Mullol J |title=The antrochoanal polyp |journal=Rhinology |volume=42 |issue=4 |pages=178–82 |date=December 2004 |pmid=15626248 |doi= |url=}}</ref> | |||
*Relative common ~5% of nasal polyps.<ref name=pmid19609378>{{cite journal |authors=Frosini P, Picarella G, De Campora E |title=Antrochoanal polyp: analysis of 200 cases |journal=Acta Otorhinolaryngol Ital |volume=29 |issue=1 |pages=21–6 |date=February 2009 |pmid=19609378 |pmc=2689564 |doi= |url=}}</ref> | |||
Epidemiology: | |||
*"Almost always" recur if incompletely excised.<ref name=pmid19609378/> | |||
*Originates from maxillary sinus and extends to choana.<ref name=pmid23179936>{{cite journal |authors=Balikci HH, Ozkul MH, Uvacin O, Yasar H, Karakas M, Gurdal M |title=Antrochoanal polyposis: analysis of 34 cases |journal=Eur Arch Otorhinolaryngol |volume=270 |issue=5 |pages=1651–4 |date=May 2013 |pmid=23179936 |doi=10.1007/s00405-012-2274-2 |url=}}</ref> | |||
===Microscopic=== | |||
Features:<ref>{{cite journal |authors=Min YG, Chung JW, Shin JS, Chi JG |title=Histologic structure of antrochoanal polyps |journal=Acta Otolaryngol |volume=115 |issue=4 |pages=543–7 |date=July 1995 |pmid=7572133 |doi=10.3109/00016489509139364 |url=}}</ref> | |||
*Respiratory epithelium. | |||
*Relatively pauciglandular - when compared to inflammatory nasal polyps. | |||
*Typically few eosinophils. | |||
DDx: | |||
*Inflammatory nasal polyps. | |||
===Sign out=== | |||
<pre> | |||
Ethmoid Sinus Contents (Right), Excision: | |||
- Benign nasal polyp (antrochoanal type) and mildly inflamed sinonasal mucosa. | |||
- NEGATIVE for malignancy. | |||
</pre> | |||
==See also== | ==See also== | ||