PubMed · 13759670
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R H LAWLER. 1961. Imperforate anus.. https://pubmed.ncbi.nlm.nih.gov/13759670/
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AIM: Pelvic magnetic resonance imaging (MRI) and endoanal ultrasound which are established imaging methods for perianal inflammatory lesions in patients with Crohn's disease require expensive specialized equipments and expertise. We investigated the feasibility and sensitivity of transcutaneous perianal ultrasound (PAUS) using regular ultrasound probes in the imaging of perianal inflammatory lesions. The sonographic findings were correlated to pelvic MRI-scans. METHODS: We performed PAUS in 25 patients with Crohn's disease and clinical signs of perianal inflammatory disease. Within a median of 10 d (range 0-75) these patients underwent MRI of the pelvis. Regular convex and linear high resolution probes were used for PAUS. The sonographic findings were correlated to the MRI findings by blinded investigators. RESULTS: The sonographic investigations were well tolerated by all patients. Fistulae typically presented as hypoechoic tracks. Twenty-nine fistulae were detected in 22 patients. Abscesses were detected in 7 patients and presented as hypo- or anechoic formations. Twenty-six of 29 fistulae and 6 of 7 abscesses could be confirmed by MRI. Kappa statistics showed an excellent agreement (kappa>0.83) between the two imaging methods. CONCLUSION: PAUS is a simple, painless, feasible, real-time method that can be performed without specific patient preparation which is comparable in its sensitivity to pelvic MRI in the detection of perianal fistulae and/or abscesses. PAUS can especially be recommended as a screening tool in acute perianal disorders such as perianal abscess and for follow-up studies of perianal inflammatory disease.
BACKGROUND AND AIMS: Laparoscopic anorectoplasty (LAR) is a relatively new procedure in the treatment of imperforate anus. Using magnetic resonance imaging (MRI), we evaluated the anatomical features of the anorectal region of children treated with LAR and compared this with conventional posterior sagittal anorectoplasty (PSARP). The findings were correlated with functional outcome. PATIENT/METHODS: A retrospective review of ten children with the high/intermediate types of imperforate anus underwent LAR between May 2000 and December 2002. MRI of the pelvis was performed post-operatively and a semi-quantitative score was used to assess the degree of sphincter symmetry, peri-rectal fibrosis, and the position of the pull-through rectum. The defecation status of these patients was also recorded. Eight historical patients who had undergone PSARP served as a control group. RESULTS/FINDINGS: When compared with PSARP patients, a significantly lower proportion of LAR patients had sphincter asymmetry (40 vs. 100%, p < 0.05) and peri-rectal fibrosis (40 vs. 87.5%, p < 0.05). The positioning of the rectum was, however, central for both groups (90 vs. 87.5%). No statistical correlation was found between defecation status and the degree of sphincter asymmetry or peri-rectal fibrosis. INTERPRETATION/CONCLUSION: LAR allows more optimal anatomical reconstruction for patients with the high/intermediate types of imperforate anus. However, additional factors that are not correctable by surgery, such as intrinsic innervation deficiency, also influence the clinical outcome.
Anorectal malformations (ARMs) and cloacal anomalies are rare and complex malformations of the lower gastrointestinal and genitourinary tracts. They affect approximately 1 in 3,500 live births. The treatment of these patients has traditionally focused on achieving urinary and faecal continence, with preservation of renal function. With improved surgical techniques and paediatric intensive care facilities, these patients now live relatively normal lives, with a near-normal life expectancy. Comparing results reported by different surgeons is difficult because a wide range of terminology is employed to describe the anomalies encountered. This paper attempts to simplify some of the reported outcomes of bowel function to allow a more direct comparison between groups. Urinary outcomes were not so easily comparable due to the disparity in assessing patient outcomes. Therefore, before a global analysis of all groups can take place, a standardised terminology will be necessary. At present there is a gap in the published literature of comprehensive follow-up in this group of patients, particularly regarding reproductive and sexual functioning. More detailed information on long-term outcomes is needed in these patients to facilitate informed decision-making by the primary physician (usually the paediatric surgeon) and the parents on behalf of their child.