Spontaneous Rectal Perforation with Transanal Evisceration of the Small Bowel: A Rare Case Report

Article information

J Acute Care Surg. 2022;12(2):74-76
Publication date (electronic) : 2022 July 22
doi : https://doi.org/10.17479/jacs.2022.12.2.74
Department of Surgery, King George’s Medical University, Lucknow, Uttar Pradesh, India
*Corresponding Author: Ajay Kumar Pal, Department of Surgery, King George’s Medical University, Lucknow, Uttar Pradesh, India, E-mail: akpal.jnmc@yahoo.com
Received 2021 August 11; Revised 2022 January 31; Accepted 2022 March 1.

Abstract

Transanal evisceration of the small bowel is a rare surgical emergency. Rectal perforation in such cases is usually due to an underlying rectal prolapse. We report a case of a middle aged (45 years) male with spontaneous rectal perforation and transanal evisceration of the small bowel. Approximately 150 cm of small bowel had eviscerated transanally and the patient required emergent abdominal exploration, reposition of the small bowel, and repair of the rectal perforation. Small bowel evisceration through the anal verge is an emergent condition and the aim was to prevent life threatening complications related to sepsis.

Introduction

Transanal evisceration of the small bowel is an extremely rare surgical emergency. Rectal perforation in such cases is usually due to an underlying rectal prolapse. Spontaneous rectal perforation has been reported in elderly patients with a history of chronic constipation, or malignancy of the rectum or colon. It may also be a complication of other rectal diseases such as diverticulitis, blunt or penetrating trauma, or the spontaneous rectal perforation may be iatrogenic (caused during instrumentation). Near total small bowel evisceration through the anal canal following spontaneous rectal perforation is an extremely rare event in an otherwise healthy male.

Case Report

A 45-year-old, otherwise healthy male presented as a surgical emergency with complaints of loops of small bowel coming out through his anus following defecation. The patient had developed lower abdominal pain, but had no prior history of rectal prolapse, chronic constipation, altered bowel habits, rectal bleeding, or trauma. On examination, the patient was conscious, afebrile, had tachycardia (100 bpm), and a blood pressure of 110/60 mmHg. His abdomen was soft, not tender, distended, or rigid, and the patient was not guarding. The majority of the small bowel (more than 150 cm) had come out of the rectum (which was congested). Barring leukocytosis (with total leukocyte count of 13,500/μL), other laboratory results (prothrombin time, serum albumin, serum lactate, renal and hepatic function tests, and arterial blood gas analysis) revealed values in the normal range. The patient’s condition necessitated immediate surgical intervention due to the risk of gangrene in the eviscerated bowel segment and the associated high mortality in such cases. This precluded the use of preoperative radiological investigation.

With continued initial resuscitation, the patient was taken for abdominal exploration (about 4 hours after the onset of symptoms) which was performed using a midline laparotomy under general anesthesia. Approximately 150 cm of extruded small bowel (Figure 1A) were reduced through the rectosigmoid tear and placed in the peritoneal cavity (Figure 1B). A 5 cm irregular longitudinal tear was observed about 8–10 cm above the anal verge, without thickening or ulceration, and the tear was along the anterior aspect of rectum involving the rectosigmoid junction through which almost the whole of the small bowel loops had eviscerated (Figure 2). There was no growth or diverticula of the colon, rectum, or anal canal, and no fecalith or foreign bodies identified. The whole of the small bowel was repositioned in the abdominal cavity and was deemed viable. Considering the patient’s age, minimal physiological derangements, and lack of evidence of small bowel necrosis or intraperitoneal fecal contamination or sepsis, the rectal tear was repaired in 2 layers using polyglactin 3-0 sutures, followed by insertion of a single abdominal drain in the pelvic cavity. Post reposition of the small bowel, the anal opening was examined, and no evidence of rectal prolapse or anal sphincter defect was identified. Abdominal closure was performed in 2 layers using polypropylene 1-0 for the fascia and nylon 1-0 for the skin. The post operative course was uneventful and so the patient was allowed liquids from the 2nd post operative day, with full oral intake by the 4th postoperative day. The drain was removed on the 5th postoperative day, antibiotics were prescribed for 7 days (3rd generation cephalosporin and metronidazole), and the patient was discharged on the 8th postoperative day. There was no obvious pathology observed during the lower gastrointestinal endoscopy following 6 months of uneventful surgical outpatient clinic appointments.

Figure 1

Eviscerated small bowel. (A) The arrow shows approximately 150 cm of eviscerated small bowel; (B) the arrow shows eviscerated small bowel after reduction into the abdominal cavity through the rectal perforation site.

Figure 2

Site of rectal perforation. The arrow shows an irregular longitudinal tear without thickening or ulceration along the anterior aspect of rectum involving rectosigmoid junction.

Discussion

Transanal evisceration of the small bowel is a rare event; however, many cases have been reported since the 1st description of this condition by Brodie in 1827. Spontaneous rectal rupture with small bowel evisceration is also a rare clinical entity [15]. Perforation of the rectum or the rectosigmoid usually occurs due to acute or chronic ulceration of the intestinal wall. The etiology of the ulcer in most cases is diverticulosis, solitary rectal ulcer, or malignancy. The rectum or rectosigmoid can rupture due to a sudden increase in intrabdominal pressure which usually occurs due to blunt abdominal injuries, and rarely occurs in cases of sudden heavy lifting, or by chronic straining during defecation in chronically constipated individuals. The term “spontaneous rupture” is used when no specific etiology can be ascertained. The proposed mechanisms of rupture in these cases include intramural hemorrhage with the hematoma separating and weakening the rectal wall, congenital annular malformations causing a rectal weak spot, or a progressive deepening of the pouch of Douglas with a sudden increase in intra-abdominal pressure [68]. The standard management strategy involves an exploratory laparotomy, abdominal cavity irrigation, repositioning of the small bowel, and suturing of rectal wall [9]. In another reported case of spontaneous rectosigmoid rupture with an acute transanal small bowel evisceration, the patient was managed by laparoscopic suture repair of the rectosigmoid perforation site after repositioning of the small bowel in the abdominal cavity without the use of a stoma [2]. We propose that the initial emergency treatment must include an immediate attempt to reduce the eviscerated bowel, along with repair of the perforation site (with a requirement for a defunctioning bowel stoma in frail patients with intraabdominal collection/sepsis and risk/established bowel ischemia, to prevent leakage at the site of suture repair and the associated morbidity).

Small bowel evisceration through the anal verge is an emergent condition requiring surgical intervention and finding the cause of the evisceration should be sought after surgical management to prevent recurrence or sepsis related life threatening complications.

Notes

Author Contribution

Conceptualization: AKP. Methodology: PK and DY. Formal investigation: AKP, AK, HSP and KKS. Data analysis: AKP, PK, AK, HSP and KKS. Writing original draft: AKP and PK. Writing - review and editing: AKP, PK, DY, AK, HSP and KKS.

Funding

The authors did not receive any financial support for this study.

Ethical Statement

This research did not involve any human or animal experiments.

Data Availability

All relevant data are included in this manuscript.

Conflicts of Interest

The authors have no conflicts of interest to declare.

References

1. Czerniak A, Avigad I, Vermesh M, Rabau MY, Wolfstein I. Spontaneous rupture of the rectosigmoid with small-bowel evisceration through the anus. Dis Colon Rectum 1983;26(12):821–2.
2. Antony MT, Memon MA. Successful laparoscopic repair of spontaneous rectosigmoid rupture with an acute transanal small bowel evisceration. Surg Laparosc Endosc Percutan Tech 2005;15:172–3.
3. Papapolychroniadis C, Kaimakis D, Giannoulis K, Parlapani A, Karpini E, Georgiou M, et al. Spontaneous rupture of the rectosigmoid with small bowel evisceration through the anus. Tech Coloproctol 2004;8(Suppl 1):s126–8.
4. Wrobleski DE, Dailey TH. Spontaneous rupture of the distal colon with evisceration of small intestine through the anus: Report of two cases and review of the literature. Dis Colon Rectum 1979;22(8):569–72.
5. Sengar M, Neogi S, Mohta A. Prolapse of the rectum associated with spontaneous rupture of the distal colon and evisceration of the small intestine through the anus in an infant. J Pediatr Surg 2008;43(12):2291–2.
6. Ahmad A, Kumar S, Sonkar AA, Kumar S. Evisceration of the small bowel through a perforated and prolapsed sigmoid colon: An unusual presentation of rectal prolapse. BMJ Case Rep 2016;2016:bcr2016214811.
7. Minkari T, Turan C. Rectosigmoidal rupture caused by effort during defecation and acute evisceration of several loops of the small intestine through the anus. Ann Surg 1961;154(6):967–71.
8. Berwin JT, Ho TK, D’Souza R. Small bowel evisceration through the anus-Report of a case and review of literature. BMJ Case Rep 2012;2012:bcr1220115316.
9. Shoab SS, Saravanan B, Neminathan S, Garsaa T. Thiersch repair of a spontaneous rupture of rectal prolapse with evisceration of small bowel through anus - A case report. Ann R Coll Surg Engl 2007;89(1):W6–8.

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Figure 1

Eviscerated small bowel. (A) The arrow shows approximately 150 cm of eviscerated small bowel; (B) the arrow shows eviscerated small bowel after reduction into the abdominal cavity through the rectal perforation site.

Figure 2

Site of rectal perforation. The arrow shows an irregular longitudinal tear without thickening or ulceration along the anterior aspect of rectum involving rectosigmoid junction.