title: Enterolith causing bladder outlet obstruction in patient with imperforate anus. A rare case presentation.
abstract: Imperforate anus is a rare anomaly associated with defects commonly referred to as vertebral defects, anal atresia, cardiac defects, tracheo-oesophageal fistula, renal anomalies and limb abnormalities (VACTERL). With modern surgical procedures the overall outcome is excellent. Permanent colostomy which is required in some cases of this disease can result in some rare complications such as enteroliths formation, as illustrated in the case we are presenting here related to a 28-year-old male who reported at urology emergency with features of urinary and acute large bowel obstruction. On investigation he was found to have two enteroliths in his distal loop of sigmoid colostomy. The more distal of the two enteroliths caused urinary retention and hence acute renal failure, and the proximal one caused large bowel obstruction by compressing the proximal loop of colostomy. This case demonstrates that the blind distal sigmoid colostomy loop can grow enteroliths secondary to stasis of its own contents over a long period.
authors.affiliation: Department of Hepatobiliary and Gastrointestinal Surgery, Sindh Institute of Urology and Transplantation (SIUT), Karachi.
authors.forename: Mudassir
authors.initials: M
authors.lastname: Hussain
authors.affiliation: Department of Hepatobiliary and Gastrointestinal Surgery, Sindh Institute of Urology and Transplantation (SIUT), Karachi.
authors.forename: Shah
authors.initials: S
authors.lastname: Muhammad
authors.affiliation: Department of Hepatobiliary and Gastrointestinal Surgery, Sindh Institute of Urology and Transplantation (SIUT), Karachi.
authors.forename: Muhammad Arsalan
authors.initials: MA
authors.lastname: Khan
authors.affiliation: Department of Hepatobiliary and Gastrointestinal Surgery, Sindh Institute of Urology and Transplantation (SIUT), Karachi.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Manzoor
mesh_terms: D000328:Adult; D001006:Anus, Imperforate / Q000150:complications / Q000601:surgery*; D002137:Calculi / Q000150:complications* / Q000175:diagnosis* / Q000601:surgery; D003125:Colostomy / Q000009:adverse effects*; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D001748:Urinary Bladder Neck Obstruction / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery
keywords: Enterolith, Colostomy, Imperforate anus, Urinary obstruction, Intestinal obstruction.