PURPOSE: This study was conducted to evaluate the functional results of an anterior extrasphincteric anorectoplasty (AEA) guided by an illuminating intrarectal indicator, in which a transperineal positioning of the anal canal was performed without cutting the perineal sphincter muscle. METHODS: Point A which would be a anal orifice in future was designated 0.3 mm anterior to the anal dimpling site. A semicircular incision was made in the front of the anus. The flap, which included from the anal skin to the upper margin of the external anal sphincter, was everted posteriorly. A quarter of the frontal upper rim of the external anal sphincter was exposed, and the center of the uppermost portion was designated as point B. From point A toward point B, a spinal needle was inserted through the anal sphincter, and needle's tract was dilated under direct identification of the sphincter muscle by electronic stimulation. An illuminating intrarectal indicator with a laparoscopic light source was pushed through the distal stoma of a sigmoid colostomy toward its distal lumen so that the blind rectal pouch was perineally exposured. On the blind pouch, a cruciate incision was made, and it was anastomosed to the anus. RESULTS: From 1991 to 2000, 11 patients with imperforate anus of high and intermediate type were operated by our method. In one case, the urethral injury was found intraoperatively and was immediately repaired. One case of anal stenosis was improved after serial Hegar dilatation. The postoperative bowel function in the Kirwan's clinical assessment at 12 th month was grade I in 9 cases and grade II in 2 case. Conclusion: This AEA with an illuminating intrarectal indicator shows acceptable clinical results and could be considered to be an effective surgical option for anorectal malformations.
Anal Canal ; Anus, Imperforate ; Colon, Sigmoid ; Colostomy ; Constriction, Pathologic ; Dilatation ; Humans ; Needles ; Skin

In the past, abdominoperineal resection was routinely performed for anal canal cancer, yet it is now known that squamous cell carcinoma of the anal canal has a favorable prognosis and it rarely requires radical surgery. Furthermore, T1 anal cancer, which represents about 10% of all anal canal cancers, has an excellent prognosis. Endoscopic mucosal resection (EMR), which has been used for removal of early-stage adenocarcinoma of the rectum, has not been reported as a treatment option for squamous cell carcinoma of the anal canal because making the endoscopic diagnosis of early-stage anal canal cancer is very difficult. We have experienced a case of early-stage squamous cell carcinoma of the anal canal that was identified without symptoms during routine screening colonoscopy and it was removed by EMR. As far as we know, it is the first case of early-stage anal canal cancer that was diagnosed and treated by endoscopic mucosal resection.
Adenocarcinoma ; Anal Canal ; Anus Neoplasms ; Carcinoma, Squamous Cell ; Colonoscopy ; Mass Screening ; Prognosis ; Rectum

Levator ani syndrome (LAS) is a functional disorder of the pelvic floor muscles in which recurrent and persistent distressing pain is felt in the anus without detectable organic pathology. Eighty one percent of coccygodynia was alleviated by the levator massage when the massage motion was repeated 10 to 15 times on each side of the pelvis daily for 5 or 6 days. The authors encountered the LAS patient for whom successive visit to pain clinic was economic burden. Therefore, the authors managed the patient by intermittent levator massage with caudal block, once a week for 3 times, resulting in two years of pain free status. Intermittent levator massage with caudal block may be as effective as successive levator massage and induce longer painless period in the management of LAS.
Anal Canal ; Anus Diseases ; Humans ; Massage ; Muscles ; Pain ; Pain Clinics ; Pelvic Floor ; Pelvis

OBJECTIVETo compare the clinical effect of graciloplasty using two different gracilis encircled loops and to research the better method for the treatment of fecal incontinence after anoplasty for imperforate anus.

METHODSClinical data of 38 incontinence patients with congenital anal malformation undergoing graciloplasty in our hospitals from January 2009 to January 2012 were retrospectively analyzed. Twenty patients received the modified surgery in which the gracilis muscle was transposed anticlockwise into a circum-anal tunnel with a U-loop and its tendon secured to the ipsilateral pectineal ligament. Eighteen patients received the traditional surgery in which the gracilis muscle was wrapped clockwise around the anus with a γ-loop and its tendon secured to the contralateral periosteum of ischial tuberosity or pectineal ligament. All the patients were evaluated via Wexner score and anal manometry before surgery and 2 weeks, 6 months, 1 year and 2 years after surgery. In addition, it was assessed whether the patients had difficulty defecating while squatting after surgery.

RESULTSGeneralized estimating equations showed that the Wexner score in two groups gradually decreased after surgery (P=0.000), but there was no significant difference between two groups (P=0.554). At 2 weeks, 6 months, 1 year and 2 years after surgery, there were respectively 4 cases (20.0%), 3 cases (15.0%), 2 cases (10.0%), 1 case (5.0%), who showed squatting difficult defecation in the U-loop group, and 10 cases (55.6%), 12 cases (66.7%), 10 cases (55.6%), 8 cases (44.4%) in the γ-loop group. The probability of squatting difficult defecation in U-loop group was significantly lower compared to γ-loop group (P=0.002), but the probability of squatting difficult defecation in two groups did not obviously change with time (P=0.057). Repeated measures ANOVA showed that anal resting pressure, anal maximal squeeze pressure, duration of anal squeeze, and rectal maximum tolerable volume in two groups were gradually improved after surgery (all P<0.01), but there were no significant differences between two groups (all P>0.05).

CONCLUSIONSGraciloplasty with different gracilis loops can improve anal function. However, U-loop can better improve difficult defecating while squatting, and is worthwhile for spreading in clinical practice.

Anorectal malignant melanoma (AMM) is a very rare and aggressive disease. The purpose of this article is to review the clinical features of AMM, to understand treatment options, and optimal therapy by reviewing pertinent literature. Traditionally an abdominoperineal resection (APR) sacrificing the anal sphincter has been performed for radical resection of cancer, but recently, wide excision of AMM is attempted since quality of life after surgery is an important issue. Some authors reported that there was no difference in five-year survival between the patient who underwent an APR and wide excision. The goal of both APR and wide excision was to improve survival with R0 resection. Adjuvant chemoradiation therapy can be performed to achieve an R0 resection. AMM shows very poor prognosis. At this time, research on AMM is insufficient to suggest a treatment guideline. Thus, treatment options, and a therapeutic method should be selected carefully.
Anal Canal ; Anus Neoplasms ; Humans ; Melanoma* ; Prognosis ; Quality of Life ; Skin Neoplasms

PURPOSE: We designed an inside-out-type endoanal surface and saddle coil to evaluate the anal sphincter of young children who have difficulty in controlling defecation after the correction of anorectal malformation, and compared two coils using an imaging phantom and cats. MATERIALS AND METHODS: Using two coils, T1- and T2-weighted axial and coronal images of the phantom and of the anorectal region of cats were obtained, and the results were compared in terms of changes in signal intensity and SNR according to the distance from the coil's surface. We also compared the capability of the coils to delineate the internal and external anal sphincter of cat anorectum, both of which are important in the control of defecation. RESULTS: The saddle coil was slightly superior to the surface coil in terms of SNR, but inferior in terms of the signal intensity of the region of interest of the cat's anorectum. Moreover, artifacts of low signal intensity appeared in an azimuthal direction on axial images acquired using the saddle coil and prohibited delineation of the whole of the anal sphincter. In terms of image quality, the surface coil was therefore superior to the saddle coil. CONCLUSION: Our findings suggest that among inside-out-type endoanal coils, the surface coil may be superior to the saddle coil in MR imaging to evaluate the anal sphincter of young children.
Anal Canal* ; Animals ; Anus, Imperforate ; Artifacts ; Cats* ; Child* ; Defecation ; Humans ; Infant* ; Magnetic Resonance Imaging ; Phantoms, Imaging

PURPOSE: This study was performed to evaluate clinicopathologic features in anal canal carcinoma. METHODS: Among the 43 patients who were diagnosed with anal cancer at Kangnam St. Mary's Hospital, from June 1990 to June 2008, 31 patients were analyzed retrospectively. Concurrent chemoradiotherapy was performed on twenty-one patients with anal cancer. Chemotherapy with 5-FU/mitomycin and radiotherapy were started at the same time. An external beam radiation dose to the primary lesion and pelvis was modified from 4,500 to 6,000 cGy. RESULTS: Among the 31 patients with anal cancer, the dominant histologic type was squamous cell carcinoma (n=25), followed by adenocarcinoma (n=6). Twenty-nine (93.5%) of these cancers were located in the anal canal and 2 (6.5%) in the anal margin. Among the 25 patients with squamous cell carcinoma, 20 cases were treated by concurrent chemoradiotherapy. The 5-year survival rate among squamous cell carcinoma cases was 83.3% for the concurrent chemoradiation group and 50.0% for the no concurrent chemoradiation group, which was statistically significant (P=0.05). Among the squamous cell carcinoma patients, there was no significant difference in survival rates between concurrent chemoradiation group (n=17) and concurrent chemoradiation with surgical resection group (n=8) (87.5% vs 68.8%; P=0.596). CONCLUSION: In the squamous cell carcinoma treatment, concurrent chemoradiation therapy can offer better outcomes.
Adenocarcinoma ; Anal Canal ; Anus Neoplasms ; Carcinoma, Squamous Cell ; Chemoradiotherapy ; Humans ; Pelvis ; Retrospective Studies ; Survival Rate

Congenital anorectal malformation (ARM) is one of the most common gastrointestinal congenital diseases, accounting for 1/4 in digestive tract malformation, and is one of the congenital malformations in routine surveillance by the World Health Organization. Because of the variety of risk factors and the complexity of the pathological changes, etiology of ARM is still not clear. It is mostly considered that ARM is resulted from hereditary factors and environmental factors in the development of embryogenesis. Through animal experiments, scholars have found that Hox, Shh, Fgf, Wnt, Cdx and TCF4, Eph and ephrin play crucial role during the development of digestive tract. When the genes/signaling pathway dysfunction occurs, ARM may happen. In addition, ARM is related to the external factors in pregnancy. Because of the complexity of related factors in the development of human embryogenesis, the research progress of human ARM is very slow. This paper reviews relevant literatures in genetic factors and environmental factors, in order to provide the theoretical basis for the treatment and prevention of ARM.
Anal Canal ; abnormalities ; Anorectal Malformations ; Anus, Imperforate ; Female ; Humans ; Pregnancy ; Rectum ; abnormalities

We report two cases of anal cancer in patient with acquired immunodeficiency syndrome infected by human papillomavirus (HPV). One patient presented with huge anal abscess of long duration which developed after incomplete resection of anal warts 2 years ago and the other patient presented with anal bleeding. They were diagnosed as having anal squamous cell carcinoma. Highly oncogenic HPV 69 and 16 were detected by HPV-DNA chip on the previous specimen of warts and anal cancer tissue, respectively. The possibility of anal cancer should be considered in patients infected with human immunodeficiency virus who present anal problems such as anal abscess, anal bleeding, or condyloma accuminatum in anus.
Abscess ; Acquired Immunodeficiency Syndrome* ; Anal Canal ; Anus Neoplasms* ; Carcinoma, Squamous Cell ; Hemorrhage ; HIV ; Humans ; Humans* ; Warts

We report two cases of anal cancer in patient with acquired immunodeficiency syndrome infected by human papillomavirus (HPV). One patient presented with huge anal abscess of long duration which developed after incomplete resection of anal warts 2 years ago and the other patient presented with anal bleeding. They were diagnosed as having anal squamous cell carcinoma. Highly oncogenic HPV 69 and 16 were detected by HPV-DNA chip on the previous specimen of warts and anal cancer tissue, respectively. The possibility of anal cancer should be considered in patients infected with human immunodeficiency virus who present anal problems such as anal abscess, anal bleeding, or condyloma accuminatum in anus.
Abscess ; Acquired Immunodeficiency Syndrome* ; Anal Canal ; Anus Neoplasms* ; Carcinoma, Squamous Cell ; Hemorrhage ; HIV ; Humans ; Humans* ; Warts