Solitary rectal ulcer syndrome (SRUS): observational case series findings on MR defecography

OBJECTIVE

Radiological findings in solitary rectal ulcer syndrome (SRUS) are well described for evacuation proctography (EP) but sparse for magnetic resonance defecography (MRD). In order to rectify this, we describe the spectrum of MRD findings in patients with histologically proven SRUS.

MATERIALS AND METHODS

MRD from twenty-eight patients (18 female; 10 males) with histologically confirmed SRUS were identified. MRD employed a 1.5-T magnet and a standardized technique with the rectal lumen filled with gel and imaged sagittally in the supine position, before, during, and after attempted rectal evacuation. A single radiologist observer with 5 years' experience in pelvic floor imaging made the anatomical and functional measurements.

RESULTS

Sixteen patients (10 female) demonstrated internal rectal intussusception and 3 patients (11%) demonstrated complete external rectal prolapse. Anterior rectoceles were noted in 12 female patients (43%). Associated anterior and middle compartment weakness (evidenced by excessive descent) was observed in 18 patients (64%). Cystocele was found in 14 patients (50%) and uterine prolapse was noted in 7 patients (25%). Enterocoeles were detected in 5 patients (18%) and peritoneocoele in 5 patients (18%). None had sigmoidocoele. Sixteen patients (57%) demonstrated delayed voiding and 13 patients (46%) incomplete voiding, suggesting defecatory dyssynergia.

CONCLUSION

MRD can identify and grade both rectal intussusception and dyssynergia in SRUS, and also depict associated anterior and/or middle compartment descent. Distinction between structural and functional findings has important therapeutic implications.

KEY POINTS

MRD can identify and grade both rectal intussusception and dyssynergia in patients with SRUS. MRD is an acceptable substitute to evacuation proctography in assessing anorectal dysfunctions when attempting to avoid ionizing radiation. SRUS influences the pelvic floor globally. MRD depicts associated anterior and/or middle compartment prolapse.

Laparoscopic ventral mesh rectopexy in the management of solitary rectal ulcer syndrome: a cause for optimism?

AIM

The treatment of solitary rectal ulcer syndrome (SRUS) is notoriously difficult. Laparoscopic ventral mesh rectopexy (LVMR) is a nonresectional technique for patients with full thickness external rectal prolapse and internal prolapse with obstructed defaecation syndrome (ODS), features associated in the pathogenesis of SRUS. Our aim was to assess the short- and long-term efficacy of LVMR in treating SRUS.

METHOD

Forty-eight patients with SRUS who underwent LVMR over a 15-year period (December 1996 to July 2012) were identified from a prospectively maintained electronic database.

RESULTS

Forty-eight patients, 38 (79%) women, median age 43 (18-80) years, median body mass index 26 (21-40) kg/m(2) underwent LVMR for SRUS after initial biofeedback. The median follow-up was 33 months (95% CI 31-55, range 1-186 months); 52% were followed for more than 3 years and 13 (27%) for more than 5 years. Five (10%) had relapsed following a response to stapled transanal rectal resection (STARR; 10 additional patients have had a continued response to STARR). Eleven (23%) had intermittent reducible external prolapse. Epithelial ulcer healing was reported in all patients at 3 months. The ODS scores improved by 68% (P < 0.0001) and quality of life (QoL; Birmingham Bowel and Urinary Symptoms Questionnaire-22) scores improved by 45% (P < 0.0001). There was a significant improvement in bowel visual analogue scale (VAS) scores at 3 and 12 months (P = 0.0007). Sustained improvement in QoL and VAS scores was maintained at 2 years and continued in the 52% followed up for between 3 and 15 years. There were four (8%) symptomatic ODS recurrences: posterior rectal wall prolapse successfully treated by STARR (3) and one symptom free for 2 years following a temporary loop ileostomy. There were two recurrences (4%).

CONCLUSION

LVMR appears to provide a sustained improvement in QoL, VAS and patient satisfaction in patients with SRUS. Morbidity, recurrence and safety profiles are low.

Biopsy interpretation of colonic biopsies when inflammatory bowel disease is excluded

The interpretation of colonic biopsies related to inflammatory conditions can be challenging because the colorectal mucosa has a limited repertoire of morphologic responses to various injurious agents. Only few processes have specific diagnostic features, and many of the various histological patterns reflect severity and duration of the disease. Importantly the correlation with endoscopic and clinical information is often cardinal to arrive at a specific diagnosis in many cases.

Common anorectal disorders: diagnosis and treatment

Anorectal disorders affect men and women of all ages. Their management is not limited to the evaluation and treatment of hemorrhoids. Rather, a spectrum of anorectal disorders ranges from benign and irritating (pruritus ani) to potentially life-threatening (anorectal cancer). Symptoms are nonspecific, which can make the evaluation of patients difficult. In addition, treatment can be frustrating because clinicians are hamstrung by a lack of well-designed, prospective, clinical trials. Some of the most common anorectal disorders include fecal incontinence, pelvic floor dyssynergia, anal fissures, pruritus ani, proctalgia fugax, and solitary rectal ulcer syndrome. This article provides an update on the evaluation and treatment of common anorectal disorders.

Solitary rectal ulcer syndrome and stercoral ulcers

Colonic ulcerations can affect the entire colon and rectum, and have variable clinical presentation according to the anatomic location and underlying pathology. Diverse causes may lead to colonic ulceration, such as inflammatory bowel diseases, oral drugs (mostly nonsteroidal anti-inflammatory drugs), local or diffuse ischemia, and different intestinal microorganisms. An ulcer may also herald a concealed malignant disease. In most cases, colonic ulcerate is associated with diffuse colitis in the acute setup or with inflammatory bowel diseases, and to the lesser extent the ulceration is defined as solitary. This article focuses on two of the less commonly diagnosed diseases: solitary rectal ulcer syndrome and stercoral ulceration, both related to local tissue ischemia and often seen in the elderly population.