منابع مشابه
Carcinoma of the anal canal
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 ...
متن کاملMelanoma of the anal canal
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 ...
متن کاملAnal canal duplication in infants.
BACKGROUND/PURPOSE Anal canal duplication (ACD) is the most distal and the least frequent digestive duplication. A review of the English-language literature found 15 cases reported in the pediatric age group. METHODS A retrospective chart review was performed for our experience from 1999 to 2001 with 6 patients who presented with a midline postanal opening. RESULTS All of 6 patients were gi...
متن کاملBlack Anal Canal: Acute Necrosis
Acute ischemia of the rectum or anal canal resulting in necrosis is extremely uncommon because both the rectum and the anal canal have excellent blood supplies. We present a case with spontaneous necrosis of the anal canal without rectal involvement. Surgical debridement was accomplished, and the recovery was uneventful. The patient was elderly, with probable atherosclerotic arterial disease, a...
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ژورنال
عنوان ژورنال: Nippon Daicho Komonbyo Gakkai Zasshi
سال: 1970
ISSN: 1882-9619,0047-1801
DOI: 10.3862/jcoloproctology.23.2_1