View source for Familial adenomatous polyposis

'''Familial adenomatous polyposis''', abbreviated '''FAP''' and also known as '''familial polyposis coli''', is a genetic condition that predisposes to adenomatous polyps and thus invariably results in [[colorectal cancer]].

==Inheritance==
*Autosomal dominant.

==Gene==
*APC gene.

==Variants==
It comes in two flavours:
#FAP (no otherwise specified - the plain vanilla flavour).
#*Many polyps - typically > 100.
#Attenuated FAP, abbreviated AFAP.
#*Less polyps - typically 10 to 100.<ref name=pmid19822006>{{cite journal |author=Half E, Bercovich D, Rozen P |title=Familial adenomatous polyposis |journal=Orphanet J Rare Dis |volume=4 |issue= |pages=22 |year=2009 |pmid=19822006 |pmc=2772987 |doi=10.1186/1750-1172-4-22 |url=}}</ref>
#**As one my think... they tend to get cancer later than (the plain vanilla) FAP.

==Associations==
Benign things:
*[[Fundic gland polyps]].<ref name=pmid18322941>{{cite journal |author=Freeman HJ |title=Proton pump inhibitors and an emerging epidemic of gastric fundic gland polyposis |journal=World J. Gastroenterol. |volume=14 |issue=9 |pages=1318-20 |year=2008 |month=March |pmid=18322941 |doi= |url=http://www.wjgnet.com/1007-9327/14/1318.asp}}</ref>

Tumours:<ref name=pmid19822006>{{cite journal |author=Half E, Bercovich D, Rozen P |title=Familial adenomatous polyposis |journal=Orphanet J Rare Dis |volume=4 |issue= |pages=22 |year=2009 |pmid=19822006 |pmc=2772987 |doi=10.1186/1750-1172-4-22 |url=}}</ref>
*[[Hepatoblastoma]].
*[[Colorectal carcinoma]].
*[[Gastric adenocarcinoma]].
*Papillary thyroid carcinoma, cribriform-morular variant.<ref name=pmid18612695>{{cite journal |author=Groen EJ, Roos A, Muntinghe FL, ''et al.'' |title=Extra-intestinal manifestations of familial adenomatous polyposis |journal=Ann. Surg. Oncol. |volume=15 |issue=9 |pages=2439–50 |year=2008 |month=September |pmid=18612695 |pmc=2518080 |doi=10.1245/s10434-008-9981-3 |url=http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2518080/?tool=pubmed}}</ref>

Benign tumours:<ref name=pmid19822006>{{cite journal |author=Half E, Bercovich D, Rozen P |title=Familial adenomatous polyposis |journal=Orphanet J Rare Dis |volume=4 |issue= |pages=22 |year=2009 |pmid=19822006 |pmc=2772987 |doi=10.1186/1750-1172-4-22 |url=}}</ref>
*[[Osteomas]].
*[[Desmoid tumour]].

==Prevalence==
1/11,300-37,600 in Europe.<ref name=pmid19822006>{{cite journal |author=Half E, Bercovich D, Rozen P |title=Familial adenomatous polyposis |journal=Orphanet J Rare Dis |volume=4 |issue= |pages=22 |year=2009 |pmid=19822006 |pmc=2772987 |doi=10.1186/1750-1172-4-22 |url=}}</ref>

==See also==
*[[Colorectal carcinoma]].
*[[Adenomatous polyps]].

==References==
{{Reflist|2}}

[[Category:Syndromes]]