Laparoscopic surgery for colovesical fistula associated with sigmoid colon diverticulitis: a review of 39 cases

Laparoscopic management of colovesical fistula in different clinical scenarios

INTRODUCTION

Colovesical fistula (CVF) is a condition with various aetiologies and presentations. Surgical treatment is necessary in most cases. Due to its complexity, open approach is preferred. However, laparoscopic approach is reported in the management of CVF due to diverticular disease. The aim of this study was to analyse the management and outcome of patients with CVF of different aetiologies treated with laparoscopic approach.

PATIENTS AND METHODS

This was a retrospective study. We retrospectively reviewed all patients undergoing elective laparoscopic management of CVF from March 2015 to December 2019.

STATISTICAL ANALYSIS USED

None.

RESULTS

Nine patients underwent laparoscopic management of CVF. There were no intraoperative complications or conversions to open surgery. A sigmoidectomy was performed in eight cases. In one patient, a fistulectomy with sigmoid and bladder defect closure was performed. In two cases of locally advanced colorectal cancer with bladder invasion, a multi-stage procedure with temporary colostomy was chosen. In three cases, with no intraoperative leakage, we did not perform bladder suture. Four Clavien I-II complications were recorded. Two fragile patients died in the post-operative period. No patients required re-operation. At a median follow-up of 21 months (interquartile range: 6-47), none of the patients had recurrence of fistula.

CONCLUSIONS

CVF can be managed with laparoscopic approach by skilled laparoscopic surgeons in different clinical scenarios. Bladder suture is not necessary if leakage is absent. Informed counselling to the patient must be guaranteed concerning the risk of major complications and mortality in case of CVF due to malignant disease.

A case of emphysematous intrascrotal abscess secondary to sigmoid coloseminal fistula

A 54-year-old male patient presented with pneumaturia. Right scrotal swelling was observed. CT showed an intrascrotal abscess with gas formation. MRI showed a fistula extending from the sigmoid colon to the seminal vesicles. Since there are many diverticula in the sigmoid colon, an abscess caused by diverticulitis may have formed a fistula. The scrotal abscess was drained; however, the pus discharge did not decrease. A colostomy was then performed, and the scrotal infection rapidly improved. Sigmoidectomy and fistula transection were performed 11 months after the colostomy. Prompt diagnosis of a sigmoid coloseminal fistula using imaging has led to optimal treatment.

Right-Sided Epididymo-Orchitis as a Presentation of Diverticular Colovesical Fistula

A colovesical fistula is a recognized complication of diverticulitis. Although the underlying pathology is usually of colonic origin, the majority of patients present with urological symptoms, classically pneumaturia, and urinary tract infection. Epididymo-orchitis is a rare presentation. It is important to identify elderly males who present with recurrent urosepsis and/or epididymo-orchitis refractory to medical treatment as they may have an underlying benign or malignant etiology. The diagnostic challenge in these cases is to confirm the presence of a fistula, exclude malignancy, and determine the underlying pathology. We present a case of diverticular colovesical fistula in an elderly male who presented with symptoms of epididymo-orchitis on a background of recurrent urinary tract infections. The presence of intravesical gas within the left posterolateral bladder wall and soft tissue thickening continuous with the mid-sigmoid colon was consistent with a colovesical fistula. This patient underwent elective laparoscopic anterior resection and repair of colovesical fistula.

Burden of Colovesical Fistula and Changing Treatment Pathways: A Systematic Literature Review

PURPOSE

Colovesical fistula (CVF) is a rare complication of sigmoid diverticulitis causing significant morbidity and quality of life impairment. Aim of this study was to analyze contemporary literature data to appraise the current standard of care and changes of treatment algorithms over time.

MATERIALS AND METHODS

A systematic review of the literature on surgical management of CVF was conducted through PUBMED, EMBASE, and COCHRANE databases, according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses statement guidelines.

RESULTS

Fourteen papers published between 2014 and 2020 and including 1061 patients were analyzed. One-stage colonic resection with primary anastomosis, with or without loop ileostomy, was the most common surgical procedure. A laparoscopic or robotic approach was attempted in 39.5% of patients, and conversion rate to open surgery was 7.8%. Clavien-Dindo grade ≥3 complication rate, 30-day mortality, and recurrence rate were 7.4%, 1.5%, and 0.5%, respectively.

CONCLUSIONS

Minimally invasive sigmoidectomy with primary anastomosis is safe and should be the first-choice approach for CVF. Bladder repair is not necessary after a negative intraoperative leak test. A standardized perioperative care can improve clinical outcomes and reduce the length of hospital stay and the duration of Foley catheterization.

A case in which a near-infrared ray catheter (NIRC) was effectively applied in laparoscopic sigmoidectomy for a sigmoidovesical fistula

A 40-year-old man visited the hospital for a refractory urinary tract infection. A sigmoidovesical fistula resulting from a sigmoidovesical diverticulum was diagnosed, and laparoscopic surgery was performed. To avoid ureteral injury during surgery for highly advanced cancer and inflammatory diseases, a ureteral stent is generally placed before the procedure. However, in this case, surgery was performed using a near-infrared ray catheter (NIRC), which emits fluorescence when irradiated with near-infrared light. By clearly observing the pathway of the ureter via near-infrared light, the integrity of the ureter could be preserved, and sigmoidectomy was safely performed. The visual navigation of the ureter with NIRC was especially useful during surgery for a colovesical fistula with marked surrounding inflammatory changes and a high risk of ureteral damage.

Management of colovesical fistula: a systematic review

INTRODUCTION

Colovesical fistulas (CVFs) account for approximately 95% enterovesical fistulas (EVFs). About 2/3 CVF cases are diverticular in origin. It mainly presents with urological signs such as pneumaturia and fecaluria. Diagnostic investigations aim at confirming the presence of a fistula. Although conservative management can be chosen for selected individuals, most patients are mainly treated through surgical interventions. CVF represents a challenging condition, which records high rates of morbidity and mortality. Our systematic review aimed at achieving deeper knowledge of both indications, in addition to short- and long-term outcomes related to CVF management.

EVIDENCE ACQUISITION

We performed a systematic literature review following the Preferred Reporting Items for Systematic Reviews and Meta-Analyzes (PRISMA) guidelines. Pubmed/MEDLINE, Embase, Scopus, Cochrane Library and Web of Science databases were used to search all related literature.

EVIDENCE SYNTHESIS

The 22 included articles covered an approximately 37 years-study period (1982-2019), with a total 1,365 patient population. CVF etiology was colonic diverticulitis in most cases (87.9%). Pneumaturia (50.1%), fecaluria (40.9%) and urinary tract infections (46.6%) were the most common symptoms. Abdomen computed tomography (CT) scan (80.5%), colonoscopy (74.5%) and cystoscopy (55.9%) were the most frequently performed diagnostic methods. Most CVF patients underwent surgery (97.1%) with open approach (63.3%). Almost all patients had colorectal resection with primary anastomosis with or without ostomy and 53.2% patients underwent primary repair or partial/total cystectomy. 4% anastomotic leak, 1.8% bladder leak and 3.1% reoperations rates were identified. In an average 5-68 month follow-up, overall morbidity, overall mortality and recurrences rates recorded were 8%-49%, 0%-63% and 1.2%, respectively.

CONCLUSIONS

CVF mainly affects males and has diverticular origin in almost all cases. Pneumaturia, fecaluria and urinary tract infections are the most characteristic symptoms. Endoscopic tests and imaging are critical tools for diagnostic completion. Management of CVFs depends on the underlying disease. Surgical treatment represents the final approach and consists of resection and re-anastomosis of offending intestinal segment, with or without bladder closure. In many cases, a single-stage surgical strategy is selected. Perioperative and long-term outcomes prove good.

A unique presentation of Colovesical fistula

A colovesical fistula (CVF) is a pathological connection between the colon and the urinary bladder. Although they are uncommon, consequences can severely affect quality of life and mortality. Diverticula are the most common cause of CVF. This case details a patient's CVF diagnosis in the emergency department with unremitting gastrointestinal and urinary symptoms. A 78-year-old male patient with recent hospitalization for stroke and left carotid endarterectomy complicated by urinary retention treated with a Foley catheter presented to the Emergency Department with a chief complaint of hematuria and unremitting diarrhea. Foley exchange resulted in improved urinary retention and diarrhea during hospitalization. One day following hospital discharge, the patient presented again with a blocked Foley catheter and diarrhea. Foley irrigations resulting in near immediate diarrhea and lack of bladder filling on bladder scan portended to a diagnosis of colovesical fistula despite no history diverticula or colon malignancy. An abdominal/pelvic computed tomography scan and cystogram confirmed a colovesical fistula. This case highlights the need for consideration of colovesical fistula in a seemingly simple ED complaint of urinary retention. It is prudent to closely follow bladder scan volumes when flushing a Foley catheter. Given the significant comorbidities such as urosepsis and health care impact of repeat ED visits and hospitalizations, CVF can and should be entertained and rapidly diagnosed in the emergency department. Our case highlights the need for consideration of a vesico-colic fistula despite the absence of initial relevant risk factors.

Laparoscopic surgery for diverticular colovesical fistula: single-center experience of 11 cases

Objective

Laparoscopic surgery for diverticular colovesical fistula (CVF) is technically challenging, and the incidence of conversion to open surgery (COS) is high. This study aimed to review our experience with laparoscopic surgery for diverticular CVF and identify preoperative risk factors for COS.

Results

This was a single institution, retrospective, observational study of 11 patients (10 males and 1 female) who underwent laparoscopic sigmoid colon resection with fistula resection for diverticular CVF from 2014 to 2019. Preoperative magnetic resonance imaging (MRI) was performed to evaluate the fistula location in the bladder, patency of the rectovesical pouch (i.e., the destination of dissection procedure between sigmoid colon and bladder) and estimate the contact area between the sigmoid colon and bladder. The relationship between preoperative variables and COS incidence was analyzed between completed laparoscopy and COS groups. The overall incidence of postoperative morbidity (Clavien–Dindo classification Grade II or higher) was 36% (4/11). Severe morbidity, reoperation, and mortality were not observed. The incidence of COS was 27% (3/11). Posterior bladder fistulas were significantly associated with COS. CVFs located on the posterior bladder appears to be a risk factor for COS. Identifying risk factors for COS preoperatively could help guide the intraoperative course.

Colovesical Fistula: Applicability of the Laparoscopic Approach and Results According to Etiology

INTRODUCTION

Colovesical fistulae have significant morbidity. The aim of our study was to describe a case series of benign and malignant colovesical fistulae, focusing on the viability of the laparoscopic approach.

METHODS

We reviewed the characteristics of 34 patients with diverticular and colon adenocarcinoma-related colovesical fistulae treated surgically from January 2001 to March 2018, 28 with elective surgery and 6 by urgent surgery. The diagnosis was established by abdominal CT scan, colonoscopy and cystoscopy. Clinically stable patients, with no retroperitoneal or bladder trigone invasion, were approached laparoscopically.

RESULTS

There were 13 benign cases (all of them approached by sigmoidectomy), 9 performed by laparoscopy with 3 conversions. Partial cystectomy was done in 11 cases, and in two cases conservative management with urinary catheter. Five laparoscopic approaches were performed in 21 patients diagnosed with malignant colovesical fistula, with 3 conversions and 16 laparotomies. The procedures were sigmoidectomy, left colectomy, anterior resection and pelvic exenteration. All of them required partial or total cystectomy. Sixteen patients had complications, most of which were minor (Clavien-Dindo classificationI-II) and with laparotomy approach.

CONCLUSIONS

The laparoscopic approach can be feasible in well-selected and stable patients, but we have to take into consideration that the conversion rate can be high and this surgery should be performed by experienced surgeons.