Neuroendocrine tumor of the anal canal
نویسندگان
چکیده
منابع مشابه
Gastrointestinal stromal tumor of the anal canal: an unusual presentation
BACKGROUND Gastrointestinal stromal tumors (GIST) of the stomach are the most frequent followed by those of the intestinal tract, while colon and rectum represent rare sites. GIST of the anal canal are extremely rare. They have been studied along with GIST of the rectum, as a single entity, and along with them they represent 5% of GIST. GIST arising from the anal canal account for only 2%-8% of...
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There are around 5,000 new cases of anal canal cancer each year in the United States. It is of particular risk in HIV-positive populations. Many cases are related to persistent infection with human papillomavirus (HPV). The treatment of anal cancer has progressed from abdominoperineal resection mandating permanent colostomy in the 1940s through the 1970s to modern chemoradiation with sphincter ...
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Anorectal melanoma is an uncommon and aggressive cancer with an unfavorable prognosis and a predilection for early infiltration and distant spread, resulting in poor overall survival. It represents approximately 1 percent of all anorectal malignancies. Between 0.4% and 1.6% of all melanomas arise in the anorectal region, and the anal canal is the most frequent site of melanoma after the skin an...
متن کاملEndosonography of the Anal Canal
Although the initial application of endoluminal ultrasonography was for the evaluation and staging of rectal cancer, it soon became apparent to clinicians that this modality had tremendous potential in the evaluation of benign disease of the anal canal and pelvic floor.1,2 This article will discuss the current role of endosonography of the anal canal, with emphasis on anatomical considerations ...
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Neuroendocrine tumors in gastrointestinal (GI) tract are a rare source of GI malignancy with an estimated incidence of 2.5 - 5 per 100,000 people per year and the prevalence of 35 per 100,000. In the GI tract, they are located in decreasing order of frequency in appendix, ileum, rectum, stomach, and colon. Those found in the anal region represent just 1% of all malignancies of the anal canal. T...
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ژورنال
عنوان ژورنال: GE Jornal Português de Gastrenterologia
سال: 2012
ISSN: 0872-8178
DOI: 10.1016/j.jpg.2011.06.002