Enterovesical fistulae: aetiology, imaging, and management

Insights into renal and urological complications of inflammatory bowel disease

Inflammatory bowel disease (IBD) is a chronic condition characterized by immune-mediated inflammation in the gastrointestinal tract, which follows a relapsing and remitting course. Apart from affecting the gastrointestinal tract, IBD also has extra-intestinal manifestations (EIMs). While the etiology of extraintestinal manifestation remains unclear, it is theorized to be based on immunological responses influenced by genetic factors. Renal involvement is one of the EIMs observed in ulcerative colitis and Crohn's disease. The renal manifestations in IBD patients encompass a range of conditions including nephrolithiasis, amyloidosis, tubulointerstitial nephritis, glomerulonephritis (GN), obstructive pathologies, and chronic kidney disease (CKD). The incidence of CKD in IBD patients varies from 5%-15%. The decline in renal function can stem from various factors such as direct inflammatory damage to the kidneys leading to glomerular or tubular injury, or from complications like recurrent stones, amyloidosis, or GN. Additionally, nephrotoxic medications used in treating IBD, such as TNF-α inhibitors, calcineurin inhibitors, and aminosalicylates, can exacerbate the decline in renal function. Currently, there is a lack of consensus regarding these patients' screening and renal function monitoring. This review aims to assess the existing literature on the different renal complications among individuals with IBD, shedding light on their pathophysiology and management.

Robotic management of urinary fistula

Objectives

To highlight critical preoperative and intraoperative considerations in approaching fistula repair robotically.

Methods

A search of the literature was conducted to identify relevant articles pertaining to robotic management of urinary fistulae.

Results

Fistulae of the genitourinary tract can be a challenging dilemma for urologists, as definitive management may require surgical intervention. Pathogenesis of both enteric and non-enteric fistulae are multifactorial, and successful repair hinges on the meticulous perioperative evaluation, planning, and execution. Traditional open techniques can subject patients to increased morbidity and prolonged hospitalizations. Since its introduction, the robotic surgical platform has continued to expand its indications. Its three-dimensional visualization and tremor free wristed instrument movements have made the robotic platform an attractive option for genitourinary fistula reconstruction.

Conclusion

Robotic management of complex urinary fistulae is feasible in expert hands; more studies are needed to define its role in the treatment algorithm of this devastating conditions.

Outcomes of surgical treatment for enterovesical fistula in Crohn's disease

Enterovesical fistula (EVF) in Crohn's disease (CD) often does not improve with medical treatment and requires surgical treatment. The surgical treatment strategy for EVF in CD is definitive resection of the intestinal tract side, and performing a leak test using dye injection into the bladder after EVF dissection to determine the appropriate surgical procedure for the bladder side. This study aimed to evaluate the outcomes of surgical treatment for EVF in CD. Twenty-one patients who underwent surgery for EVF between 2006 and 2021 were included and retrospectively evaluated for clinical background, surgical procedures, and postoperative complications. The most common origin of EVF was the ileum (17 cases; 81%), and the most common site of EVF formation was the apex (12; 57%). Surgical approaches were laparotomy in 11 (52%) cases and laparoscopy in 10 (48%). Surgical procedures on the bladder side were fistula dissection in 13 (62%) cases and sutured closure of fistula in 8 (38%). A comparison of approaches revealed no significant difference in operative time, but the amount of blood loss was significantly less in the laparoscopy (p < 0.01). There was no significant difference in the occurrence of postoperative complications between approaches. Postoperative anti-TNF-α antibody agents were used in 17 (81%) cases, and there were no cases of recurrent EVF. In conclusion, definitive resection of the intestinal tract and minimal treatment on the bladder side were sufficient to achieve satisfactory outcomes for EVF in CD.

Utilization of point-of-care ultrasound to evaluate for enterovesical fistula

Enterovesical fistula formation is a relatively rare disease process although a common complication for patients with inflammatory bowel disease (IBD), notably Crohn's disease. Enterovesical fistulas most commonly arise from diverticulitis (65-80%), cancer (10-20%), or Crohn's disease (5-7%). An increasing amount of evidence supports the use of ultrasonography as the primary imaging method for the monitoring of complications in individuals with a documented history of IBD. Our case report presents a 30-year-old female with a history of Crohn's disease who presented to the Emergency Department with concern for possible enterovesical fistula formation. Using bedside gray-scale ultrasonography, a fistulous tract clearly visualizing air bubbles and fecal matter actively moving from bowel to the bladder through the fistula was visualized confirming the diagnosis of an enterovesical fistula. While CT imaging is instrumental in identifying mural and extramural complications of IBD, performing ultrasonography in patients with IBD serves as an efficient, inexpensive, and noninvasive diagnostic aid for the diagnosis of enterovesical fistula.

Management of vesicoenteric fistulas arising from perforated Meckel's diverticulum: a report of a case and review of the literature

Vesicoenteric fistulas are rare, with an incidence of 0.1%-0.2% in the general population, and Meckel's diverticulum is a rare cause, accounting for less than 5% of cases with challenging diagnosis due to atypical symptoms at the admission. This article presents a case of a vesicoenteric fistula formation between Meckel's diverticulum perforated by a foreign body and urinary bladder in a 38-years-old Caucasian male admitted to emergency department due to colicky abdominal pain located in the lower abdomen. An extensive review of the literature was conducted referring all the cases of vesicoenteric fistula incorporating Meckel's diverticulum to elucidate the clinical characteristics, explore the diagnostic yield, and to summarize the therapeutic approach.

Positive outcomes with neoadjuvant chemotherapy in the management of colovesical fistula in cancer: a case report and literature review

Colovesical fistula (CVF) is usually developed from colonic diverticulitis, followed by tumor. Traditional surgery is usually completed in one or more stages. For complex cancerous CVF, radical resection is more difficult. We report a 62-year-old male patient diagnosed with sigmoid colon cancer combined with sigmoid vesical fistula. In the course of treatment, in addition to conventional surgery, neoadjuvant chemotherapy (NAC) was innovatively used. The sigmoid tumor and fistula were significantly shrunken. Radical surgery achieved negative margins.

Jejunovesical Fistula Diagnosis After Normal Vaginal Delivery: A Case Report

Enterovesical fistula represents an abnormal communication between the intestine and bladder. The causes are diverticulitis (56.3%), malignant tumours, which are located mainly in the intestine (20.1%), and Crohn's disease (9.1%). Other causes include iatrogenic injury (3.2%); trauma; foreign bodies in the intestinal tract; radiotherapy; chronic appendicitis; tuberculosis; and syphilis. Normal vaginal delivery as a cause for enterovesical fistula has not been reported in many publications yet. We report a case of a 30-year-old female, who developed an jejunovesical fistula after normal vaginal delivery. It was diagnosed after diagnostic cystoscopy and computed tomography of the abdomen and pelvis. There was jejuno-vesical fistula. Resection of the segment of the jejunum with side-to-side anastomosis with bladder repair was done. A follow-up cystogram was done which showed no contrast extravasation into the peritoneum. The patient was followed up for 9 months after surgery.

Keywords

case reports; fistula; jejunum; urinary bladder.

Iatrogenic enterovesical fistula secondary to a permanent urinary catheter

An enterovesical fistula is a rare entity resulting from inflammatory, neoplastic and iatrogenic processes. It can manifest clinically as pneumaturia and recurrent urinary tract infections. Its diagnosis is supported by imaging examinations and its treatment is primarily surgical.

Ileal conduit to small intestine fistula following extensive abdominopelvic resection and radiation for metastatic colon cancer

A woman in her mid-60s presented with decreased output from urostomy, which was an opening from the neobladder (ileal conduit). Presentation was preceded by a 6-month history of alternating faecaluria and increased colostomy output. Laboratory studies were notable for normal anion gap metabolic acidosis. Creatinine level of the colostomy output was 17.7 mg/dL, a finding indicative of the presence of urine in the sample. CT enterography and X-ray loopogram confirmed neobladder to small intestine fistula.Neobladder creation is commonly performed in patients with bladder cancer requiring resection. Fistulas between the neobladder and intestine are observed in fewer than 2.7% of cases. The patient's history of extensive abdominopelvic resection, colostomy creation and radiation likely contributed to fistula development. We highlight the need for a high index of suspicion for a fistula in a patient with a neobladder experiencing recurrent urinary tract infections or a high colostomy output concurrently with low neobladder output.

Surgical Management and Outcome of Entero-Urinary Fistula Complicating Crohn's Disease: A Single Center Study

BACKGROUND

Entero-urinary fistulas (EUF) are a rare complication of Crohn's disease (CD), observed in 1.6 to 7.7%. The management of EUF complicating CD is challenging. We aimed to report the outcome and surgical management of EUF in CD.

METHODS

A retrospective chart review was performed in all CD patients with EUF who underwent surgery in our center between January 2012 and December 2021. Patient demographics, preoperative optimization, surgical management, postoperative complications, and follow-up information were collected from a prospectively maintained database.

RESULTS

A total of 74 eligible patients were identified. The median interval between CD diagnosis and EUF diagnosis was 2 (0.08-6.29) years. Patients with EUF presented with pneumaturia (75.68%), urinary tract infections (72.97%), fecaluria (66.22%), and hematuria (6.76%). Fistulae originated most commonly from the ileum (63.51%), followed by the colon (14.86%), the rectum (9.46%), the cecum (2.70%), and multiple sites (9.46%). The EUF symptoms, weight, nutritional status, laboratory results were significantly improved after preoperative optimization. The absence of EUF symptoms was observed in 42 patients after the optimization and only 9 of which required bladder repair. However, 19 of 32 patients whose symptoms did not resolve required bladder repair (P = 0.001). Only 1 patient developed a bladder leakage in the early postoperative period and 3 patients experienced recurrent bladder fistula.

CONCLUSIONS

Surgical management of EUF complicating CD is effective and safe, with a low rate of postoperative complication and EUF recurrence. Preoperative optimization, which is associated with the resolution of urinary symptoms and improved surgical outcomes, should be recommended.

A Rare Case of Recurrent Cystitis in a Primary Care Setting

Uncomplicated cystitis is common in women and typically presents with symptoms such as increased urinary frequency, dysuria, suprapubic pain, and urgency. Escherichia coli is the most frequently identified pathogen in these cases. Colovesical fistulas constitute an uncommon etiology of recurrent urinary tract infections, and they are even rarer in women due to the protective barrier provided by the uterus. Faecaluria and pneumaturia are the pathognomonic symptoms of these types of fistulas that help differentiate them from recurrent cystitis. While the gold standard imaging is the abdominopelvic CT scan, in some instances, MRI may be necessary to identify fistulous tracts. This case report describes a scenario of recurrent urinary tract infection caused by a colovesical fistula, in a woman with a history of diverticular disease. In contrast to uncomplicated recurrent cystitis, the treatment of the fistula is surgical. The aim of this article is to raise awareness of this potential and rare cause of recurrent urinary tract infection encountered in a primary healthcare setting, in order to prevent the prescription of multiple cycles of ineffective antibiotic therapy in these patients and the consequent development of antimicrobial resistance, a global public health issue. Our intention is to alert general practitioners about the diagnosis of a rare cause of recurrent cystitis, the treatment of which is surgical and warrants referral to secondary care.

Extraprostatic incidental findings on prostate mpMRI: A pictorial review from the ESUR junior network

The role of multiparametric MRI (mpMRI) in prostate cancer setting is increasingly consolidated and, as a result, its usage in clinical practice is in exponential growth. However, beyond the prostate gland, several key structures are included in the field of view of mpMRI scans. Consequently, various extra-prostatic incidental findings (IFs) belonging to different anatomical systems can be accidentally recognized. Therefore, it is mandatory for a radiologist to be familiar with the wide range of pathologies potentially encountered, to guide management and avoid patient anxiety and costs due to additional work-up prompted by clinically insignificant extra-prostatic findings. With this pictorial review, we aim to illustrate a wide range of IFs that can be detected when performing mpMRI of the prostate, focusing on their imaging characteristics, differential diagnosis, and clinical relevance. Additionally, we propose the CheckDEEP, the Checklist for DEtection of ExtraProstatic findings, to be used for a thorough evaluation of target areas within each anatomical system.

Uretero-Colonic Fistula at a Previous Colon Anastomosis Site: A Case Report

Uretero-colonic fistulae are a rare disease resulting from pathologic connection between the ureter and colon, which can be difficult to diagnose. This case report reviews the case of an 83-year-old female with a history of ovarian cancer treated with surgery, radiation, and chemotherapy, who developed a uretero-colonic fistula at a previous colon anastomosis site, which was later diagnosed by ureteroscopy. She was treated with stent placement followed by loop colostomy and was discovered to have metastatic ovarian cancer. She received palliative care consultation and was advised to follow up as an outpatient with the oncology and urology services. Although uretero-colonic fistulae are treatable, treatment depends on patients' overall clinical picture.

Management of Enterovesical Fistula in a Patient with Crohn's Disease: A Case Report and Literature Review

Enterovesical fistula (EVF) is a rare complication of Crohn's disease (CD), characterized by recurrent urinary tract infections, fecaluria, and pneumaturia. However, most diagnostic tools have low sensitivity for EVF. Management consists of conservative and surgical approaches. Conservative treatment is usually adopted first. However, the appropriate time to consider surgery remains controversial. Herein, we report on the case of a 34-year-old male who presented with diffuse abdominal pain with fullness for one day. Enteroscopy and biopsy confirmed the diagnosis of Crohn's disease. Contrast-enhanced computed tomography (CT) suggested a fistula between the ileum and urinary bladder; however, cystoscopy did not find an obvious tract. The patient initially received medical treatment, but the symptoms persisted with recurrent urinary tract infections and subsequent bilateral hydronephrosis. He then underwent successful fistulectomy, partial cystectomy, and two segmental resections of the small bowel with end-to-end primary sutures. No complications or symptomatic urinary tract infections were noted during 30 months of follow-up after surgery, suggesting no recurrence of EVF. Surgical intervention is warranted when medical treatment fails or complications occur. Clinical symptoms and laboratory data are often less informative for the diagnosis of EVF, and CT is the most helpful diagnostic modality. Our management strategy provides an option for such patients.

Case report on a rare complication after transanal total mesorectal excision (TaTME) for rectal malignancy vesicorectal fistula

INTRODUCTION AND IMPORTANCE

Transanal Total Mesorectal Excision (TaTME) represents the latest surgical approach in rectal cancer management. We present a rare case of vesicorectal fistula (VRF) following a complication of TaTME surgery.

CASE PRESENTATION

A 67-year-old male underwent a Hartmann's procedure for perforated rectosigmoid cancer in 2019. He was lost to follow-up and re-presented in 2021 with synchronous cancer of the transverse colon and rectum. A two-team surgical approach was utilized: open subtotal colectomy (transabdominal approach) with concurrent excision of rectal stump (TaTME approach). Intraoperatively, an inadvertent bladder injury was identified and repaired. 8 months later, he re-presented with the passage of urine per rectum. Imaging and endoscopy revealed a VRF with cancer recurrence at the rectal stump.

CLINICAL DISCUSSION

VRF is an uncommon complication of TaTME that carries a significant physical and psychological impact on the patient. While shown to be a safe and useful technique, the long-term oncological outcomes of TaTME are still awaited. Unique complications have been reported with TaTME, including gas embolism and injuries to the genitourinary structures, in which the latter caused the eventual VRF formation in our patient.

CONCLUSION

Revisional surgery for recurrent disease is challenging and can result in rare complications, especially in patients with distorted anatomy and when new surgical techniques are utilized. Radiotherapy further causes unpredictable tissue healing quality. The challenge remains for proper patient selection with individualization of surgical approaches, while keeping a close eye on the oncological outcomes of the patient.

Colon cancer with colovesical fistula: A report of four cases and a literature review

Colon cancer with colovesical fistula (CVF) is a rare complication of colon cancer that possesses an extremely poor prognosis. Surgical treatment can improve the prognosis. The current study presents four cases of CVF, in which the first two cases were treated conservatively and the other two were treated surgically. The first case presented with intestinal obstruction for 3 days, and computed tomography (CT) was performed. The patient refused surgery and still exhibited lower abdominal pain 11 months later. The second case presented with urinary frequency and urgency that lasted for 2 days, and CT was performed. The patient refused surgery and died 2 months later. The third case presented with fecaluria that lasted for 1 month, and CT, endoscopy and one-stage palliative surgery were performed. The patient was lost to follow-up 5 months later. The fourth case presented with acute urinary tract symptoms for 4 months, and CT, endoscopy and one-stage radical surgery were performed. The patient remained disease-free 10 months later. The four cases reported in the present study not only represent excellent examples of the disease spectrum, but also act as a reminder of the possibility of detecting CVF at an early stage of the disease. The present study discusses the epidemiology of CVF, and presents the pattern of CVF in terms of signs, symptoms and imaging examinations, including CT, cystoscopy and colonoscopy, as well as treatment in the early stage of the disease.

Colo-Vesical Fistula: Relevance of Conventional Radiology in the Modern Era

Colo-vesical fistula (CVF) is usually encountered in severe inflammatory and malignant conditions. Radiological imaging is crucial to the diagnosis of a colo-vesical fistula and helps gastroenterologists and surgeons select the best treatment option. This disorder is typically identified during follow-up of treatments for diverticulitis or chronic inflammatory bowel disease. The patients present with symptoms of pneumaturia and fecaluria. The most accurate imaging modality for diagnosing CVF is CT with rectal contrast.  In this case report, we present a case of a 58-year-old male patient with complaints of fecaluria and pneumaturia for three months. Ultrasonography and barium enema revealed a clear fistulous tract between the sigmoid colon and the urinary bladder. Subsequently, the patient underwent exploratory laparotomy and the specimen was sent for histopathological evaluation to rule out malignancy. The diagnosis on imaging was consistent with post-operative findings of a CVF. This case report will add to the knowledge of radiologists about the imaging features of CVFs and their identification on imaging.

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.

Sigmoido-vesical fistula secondary to sigmoid colon cancer presenting as urinary tract infection with Lactococcus lactis: A case report

A colovesical fistula is a pathological communication between the colon and bladder. The symptoms include pneumaturia, fecaluria, and a lower urinary tract infection. The diagnosis is based on clinical symptoms, but the symptoms are not specific. Therefore, confirming the diagnosis is challenging. Urine cultures performed in patients with colovesical fistulas usually show growth of Escherichia coli or mixed growth of bowel organisms. Urinary tract infections caused by Lactococcus lactis are very rare, as it is rarely considered pathogenic in humans. We report the case of a 70-year-old woman who presented with symptoms of a recurrent urinary tract infection. Urine cultures were positive for L. lactis. Abdominopelvic computed tomography (CT) revealed focal thickening of the bladder wall and gas in the bladder. Cystoscopic examination and colonoscopy revealed sigmoid colon cancer and a sigmoido-vesical fistula. Laparoscopic surgical treatment was done. The patient recovered and was discharged 3 weeks later without chemoradiotherapy. On follow-up after 6 months, the patient was asymptomatic and stable. To our knowledge, this is the second reported case of L. lactis infection of the urinary tract and the first reported case in adults. L. lactis infection usually indicates the presence of serious underlying diseases such as malignancies, uncontrolled diabetes, and organ failure.

Role of Multidetector Computed Tomography in Diagnosis of Acquired Gastrointestinal Fistulas

Introduction Fistulas are abnormal communication between two epithelialized surfaces. Gastrointestinal fistulas are communication between the gut and another epithelialized surface. Fistulas are classified according to anatomic (internal or external), physiologic (output volume), and etiologic characteristics. In the case of clinical suspicion of a fistula, a multidisciplinary approach helps in diagnosing and management. Multidetector computed tomography (MDCT) has an advantage over other imaging modalities due to its ability to reconstruct high-resolution images in seconds, which limits motion or peristalsis artifacts, and is ideal for patients who are uncooperative or who are seriously ill.

Aim Evaluation of MDCT as an initial tool in the diagnosis and characterization of gastrointestinal fistulas.

Methods During this prospective observational study, MDCT was used to assess patients with clinical suspicion of gastrointestinal fistulas. When necessary, contrast agents were used to identify the enteric fistulous tract. The etiology and characterization of the fistulas were determined. Further, the gastrointestinal fistulas were confirmed via endoscopy, cystoscopy, or surgery.

Results The most common type of gastrointestinal fistula is enterocutaneous fistula (ECF) (39%) and the most common cause of gastrointestinal fistulas is postoperative (47%). ECFs were classified according to their etiology, anatomy, and favorable characteristics (85% favorable) along with complexity (64% complex) to aid in the management process. In addition to pancreaticopleural fistulas (22%), biliary (11%), esophageal (8%), and pelvic fistulas (19%) were also observed. There were 19% of fistulas (esophageal and biliary) that were asymptomatic. Endoscopy confirmed such asymptomatic fistulas that were not convincingly detected on CT.

Conclusion In this study, we concluded that with the appropriate clinical history, MDCT can accurately depict enteric fistulas. In addition to characterizing fistulas, MDCT is equally useful for detecting secondary complications like inflammation, obstruction, or abscesses.

Iatrogenic Vesicojejunal Fistula Six Years Following Subtotal Hysterectomy: Diagnostic Challenges and Management

Enterovesical fistula represents an abnormal communication between the urinary bladder and the gastrointestinal tract. It can result spontaneously from different disease processes, but can also complicate a surgical procedure. While most involve the large bowel, few involve the small bowel and these present with more clinical problems, as well as challenges in diagnosis and management. The patient is a 50-year-old P8 +0, woman who presented to our facility with a 6 months' history of faecaluria. There was associated history of urinary frequency, urgency, pneumaturia and dysuria. She had subtotal hysterectomy 6 years prior to presentation. Cystography, Abdominal computed tomography scan, and cystoscopy done revealed a small bowel fistula with the bladder. She had exploratory laparotomy which revealed the fistula and extensive intra-abdominal nylon suturing of bladder and jejunum. She was treated and did well postoperatively. Enterovesical fistula can follow wrong suture use in surgical procedures even many years after the procedure. A high index of suspicion and imaging modalities are needed for early diagnosis and prompt management.

Renal and Urological Disorders Associated With Inflammatory Bowel Disease

Renal and urinary tract complications related to inflammatory bowel disease (IBD) have been relatively understudied in the literature compared with other extraintestinal manifestations. Presentation of these renal manifestations can be subtle, and their detection is complicated by a lack of clarity regarding the optimal screening and routine monitoring of renal function in IBD patients. Urolithiasis is the most common manifestation. Penetrating Crohn's disease involving the genitourinary system as an extraintestinal complication is rare but associated with considerable morbidity. Some biologic agents used to treat IBD have been implicated in progressive renal impairment, although differentiating between drug-related side effects and deteriorating kidney function due to extraintestinal manifestations can be challenging. The most common findings on renal biopsy of IBD patients with renal injury are tubulointerstitial nephritis and IgA nephropathy, the former also being associated with drug-induced nephrotoxicity related to IBD medication. Amyloidosis, albeit rare, must be diagnosed early to reduce the chance of progression to renal failure. In this review, we evaluate the key literature relating to renal and urological involvement in IBD and emphasize the high index of suspicion required for the prompt diagnosis and treatment of these manifestations and complications, considering the potential severity and implications of acute or chronic loss of renal function. We also provide suggestions for future research priorities.

Radiation Therapy and Malignant Fistulae of Anorectal Cancers

PURPOSE

Though fistulization is a well-studied late toxicity of radiation therapy (RT), anorectal cancers (ARC) can present with malignant fistulae (MF) and negatively impact quality of life. The effect of RT, often combined with concurrent chemotherapy (CHT), on MF, needs systematic analysis, as practitioners are concerned that RT may exacerbate MF. We reviewed our institutional series evaluating the hypothesis that RT worsens MF.

METHODS AND MATERIALS

A single-institutional retrospective analysis of ARC patients receiving RT from 2006-2019 was performed. These patients were screened for MF. MF resected prior to RT and RT not directed at the site of MF were excluded. Effect was assessed by review of available follow-up documentation and imaging.

RESULTS

Six-hundred-and-thirty-nine patients with ARC were reviewed, and 47 had MF (7.4%). With a median follow-up of 22 months (range 2-133 months), RT improved MF in 17/29 (59%) of evaluable patients, with 9/29 (31.0%) having resolution. Median time to improvement was 50 days (range 25-117 days); median duration of improvement was 161 days (range 0-1,941 days). MF persisted in 12/29 (41%), with persistent local disease in all cases; in two cases, MF worsened concomitant with local progression.

CONCLUSIONS

Seven-point-four percent of ARC patients presented with MF. RT led to improvement or resolution in more than half of evaluable patients. Persistence or worsening of MF was only observed in patients with refractory or progressive local disease. Based on our findings, MF is not a contraindication to RT, and may be considered as an independent indication for palliative RT.

A six years' experience with 41 cases of enterovesical fistula in a Tertiary National Hospital in Indonesia: A retrospective study

INTRODUCTION

The incidence of Enterovesical Fistula (EVF) is relatively low. Currently, there is no agreement about the best methods for EVF management. This study was performed to investigate the characteristics of EVF to find the optimal diagnostic and management pattern.

METHODS

Data were collected retrospectively from the medical record at Cipto Mangunkusumo Hospital. Patients diagnosed with EVF between January 2014 and April 2019 were included. They were evaluated for demographics, characteristics, diagnostic modalities, and treatment modalities.

RESULTS

From 41 patients, 26 (63.3%) are male, and 15 (36.6%) are female. Peak incidence was 51-60 years old. The most common symptoms are fecaluria found in 32 (78%) patients. The common etiology is gastrointestinal cancer found in 17 (41.5%) patients, followed by gynecologic cancer and diverticulitis found in both 9 (22%) patients. The rectovesical fistula was seen in 25 (61%) patients with an advanced stage rectosigmoid cancer, followed by colovesical in 14 (34.1%) of patients with sigmoid diverticulitis (p 0.038). The common diagnostic modalities performed are cystoscopy in 32 (78%), followed by colonoscopy in 11 (26.8%) patients. The preferred modalities that were used in most cases were surgery in 35 (85.4%) patients. A two-stage surgical approach was used in 28 (68.3%) patients.

CONCLUSION

The incidence of EVF is uncommon. Malignancy was the leading cause of EVF in this study. Combined diagnostic modalities are recommended in EVF cases. The two-stage surgical approach was the preferred modality. Further prospective studies are mandatory to analyze this condition.

A Case of Rectovesical Fistula Following Blunt Trauma in a Child

Rectovesical fistulae (RVF) are uncommon entities and usually occur after surgery for prostate, radiation, and sometimes due to penetrating trauma. However, RVF occurrence after blunt trauma to the abdomen or perineum is very rare. The management of RVF is challenging, and treatment options should be considered according to the individual. Here we present a case of a 10-year-old boy who presented with fecaluria, pneumaturia, the passage of urine per rectum, and burning micturition for four days after incurring a blunt injury to the perineum. Cystography revealed leakage of contrast material into the rectum and an MRI of the pelvis was done for confirmation, which revealed a 1.3 cm thick fistulous tract of 2.7 cm length with openings at the posterior bladder wall and anterior rectal wall. After conservative management for 14 days failed to show any improvement, primary repair of the fistulous tract along with fecal diversion and urinary diversion were done. The suprapubic catheter was removed after four weeks, and at the two-month follow-up, colostomy closure was done. No recurrence was found in the six-month follow-up period. In cases of small traumatic RVF where conservative management fails, fecal and urinary diversion can be considered, as it is associated with successful outcomes and less recurrence.

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 case report: Use of FT-IR analysis to improve Colovesical fistula diagnosis

Colovesical fistula (CVF) is an abnormal connection between the colon and the urinary bladder. Faecaluria, reported in 40–70% of cases, is virtually pathognomonic for CVF. During the 5th day of recovery in an 84 years old subject, the passage of cloudy, malodorous urine with visible debris was observed. According to the pathognomonic character of faecaluria, the sample was signed to the laboratory for biochemical and microbiological investigation, able to define the type and origin of materials. Following clinical requirements, both biochemical pathways and instrumental procedures able to confirm or exclude the presence of faecal components in urine were considered. No biochemical compound or component addressing faecal compounds in urine results available between laboratory tests. The brown powder component of the pellet was identified as Keratin, with 90% overlapping with the reference spectrum of the compound. FT-IR analysis on urine pellet can be proposed as a simple, non-invasive, and fast method to improve the diagnostic course of CVF.

Colovesical fistula in a young adult due to sigmoid colon diverticulitis undetected in computed tomography: Case report and review of literature

Introduction

Colovesical fistula is the pathological communication between the colon and urinary bladder. It is related with high morbimortality rate and it is and uncommon complication of diverticulosis in young adults.

Case presentation

We report a case of a 38-year-old Brazilian man with fecaluria and pneumaturia for eight months, whose colovesical fistula was undetectable in CT scan and with surgical management.

Discussion

Diverticulosis is the main inflammatory condition causing colovesical fistulas and the sigmoid colon is the most common part involved. It is more prevalent in patients over 60 years old and in western countries due to low fiber diet.

Conclusion

Colovesical fistula diagnosis is difficult, requiring high suspicious and proper investigation through good anamnesis, CT scan and also colonoscopy and cystoscopy when necessary.

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Colovesical fistula is an uncommon disorder in young adults and it is more frequently in western countries.

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Diverticulits is the main inflammatory condition causing enterovesical fistulas and the sigmoid colon the most common.

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Colovesical fistula diagnosis is difficult, requiring proper investigation through CT scan or other exams.

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Most cases of colovesical fistula are diagnosed during surgery approach and surgically managed.

First Case of Enterovesical Fistula Caused by Ischaemic Enteritis

We present the case of an enterovesical fistula (EVF) caused by ischemic enteritis. Ischemic enteritis is caused either by mesenteric macrovasculature occlusion or any pathophysiologic vasospasm of the microvasculature. In other words, ischemic enteritis (IE) occurs when the inflow of blood to the small intestines is reduced. The frequency of ischemic enteritis is less as compared to ischemic colitis because of the vast blood supply to the small intestine. It is the first case to be reported in the medical literature to date. EVF is a rare entity. It is a pathological connection between the bowel loops and the urinary bladder. EVF is a result of an underlying disease or injury. EVF is mostly caused by diverticular diseases, carcinoma colon, Crohn's, and inflammatory bowel disease, iatrogenic, appendicitis, carcinoma cervix, etc. Due to the formation of this abnormal connection, contents of the intestines, including the air, food content, etc., are usually found in the urine. Patients usually present with the complaint of irritative urinary tract symptoms and recurrent urinary tract infection (UTI). Surgical management is the mainstay of treatment although medical management is tried for those who cannot bear to undergo surgery.

Novel Endoscopic Management of Colovesical Fistula Secondary to Colonic Diverticular Disease

Colovesical fistula (CVF) is an abnormal communication between bowel and urinary bladder. Most common cause is complicated colonic diverticular disease. The treatment of choice for CVF is surgery. Conservative treatment is reserved for highly selected patients who are unfit for definitive surgery. We report the case of an 86-year-old gentleman with multiple comorbidities, who presented with pneumaturia, fecaluria, and recurrent urinary tract infection. He was diagnosed to have sigmoid colonic diverticulosis with a CVF and was successfully managed with the novel combined endoscopic approach (a simultaneous cystoscopy and flexible colonoscopy), which could be the first to be reported from India.

Indications and outcomes of enterovesical and colovesical fistulas: systematic review of the literature and meta-analysis of prevalence

BACKGROUND

Entero-colovesical fistula is a rare complication of various benign and malignant diseases. The diagnosis is prominently based on clinical symptoms; imaging studies are necessary not only to confirm the presence of the fistula, but more importantly to demonstrate the extent and the nature of the fistula. There is still a lack of consensus regarding the if, when and how to repair the fistula. The aim of the study is to review the different surgical treatment options, focus on surgical indications, and explore cumulative recurrence, morbidity, and mortality rates of entero-vesical and colo-vesical fistula patients.

METHODS

A systematic review of the literature was conducted according to PRISMA guidelines. Random effects meta-analyses of proportions were developed to assess primary and secondary endpoints. I2 statistic and Cochran's Q test were computed to assess inter-studies' heterogeneity.

RESULTS

Twenty-two studies were included in the analysis with a total of 861 patients. Meta-analyses of proportions pointed out 5, 22.2, and 4.9% rates for recurrence, complications, and mortality respectively. A single-stage procedure was performed in 75.5% of the cases, whereas a multi-stage operation in 15.5% of patients. Palliative surgery was performed in 6.2% of the cases. In 2.3% of the cases, the surgical procedure was not specified. Simple and advanced repair of the bladder was performed in 84.3% and 15.6% of the cases respectively.

CONCLUSIONS

Although burdened by a non-negligible rate of complications, surgical repair of entero-colovesical fistula leads to excellent results in terms of primary healing. Our review offers opportunities for significant further research in this field. Level of Evidence Level III according to ELIS (SR/MA with up to two negative criteria).

Colovesical fistula secondary to hernia mesh migration: an unusual incident

We evaluated a 27-year old male with pneumaturia and fecaluria with a past history of right inguinal hernia repair. Though, cystoscopy and contrast enhanced computed tomography did not furnish any evidence to arrive at a diagnosis, interestingly, colonoscopy revealed a mesh in the sigmoid colon making apparent the diagnosis of colovesical fistula secondary to mesh migration. Later, surgical removal of the mesh from the sigmoid colon with rent closure of the fistulous opening was done successfully. Our case thus, highlights the vital role of common diagnostic tool like colonoscopy in making an uncommon diagnosis.

Repair of a rectovesical fistula following laparoscopic radical prostatectomy with Martius fat pad flap interposition: a proposal of a new technique

Rectovesical fistula (RVF) is defined as an abnormal communication between the rectum and the urinary bladder, most commonly after an iatrogenic injury during pelvic surgery. Patients with RVF may have various clinical presentations, ranging from fecaluria, pneumaturia, to urine leakage through the anus. The quality of life for patients with this pathology is adversely affected owing to the associated psychological burden. Surgery is the preferred treatment given the low success rates reported for conservative or minimally invasive approaches. Herein, we present a case of a 65-year-old man with RVF after radical prostatectomy successfully treated by a transperineal approach using a modified Martius procedure.

Ultrasound in the Diagnosis of Malignant Pelvic Fistulas: Sonographic Findings in Correlation with Computed Tomography Imaging

Even though ultrasound is an extensively used imaging modality, it has not been effectively utilized in the evaluation and diagnosis of malignant pelvic fistulas. In this study, we tried to correlate the accuracy of sonographic findings in identifying malignant fistulas with that of computed tomography (CT) imaging. Thirty-five patients with advanced pelvic malignancies were examined over a period of 2 y. Patients underwent CT of the abdomen and pelvis with intravenous and oral/rectal contrast followed by ultrasound of the abdomen. Sonographic examinations were performed using a standardized protocol with a full bladder. Real-time ultrasound images of the abdomen and pelvis in multiple planes were acquired and stored as both image files and audio-video interleaves (AVIs). On ultrasound, the majority of the fistulas were visualized either as a continuous hyper-echoic tract within a hypo-echoic neoplastic mass ("air contrast sign") or as multiple discontinuous hyper-echoic foci with "ring down" artifacts. The sensitivity and specificity of ultrasound in the detection of malignant fistulas were 72% (confidence interval [CI]: 52%-87%) and 66% (CI: 22%-95%), respectively. We also reviewed the literature and compared the sensitivities of ultrasound in the detection of various types of pelvic fistulas obtained in previous studies with those in the present study. Results suggest that although ultrasound cannot be used as a primary imaging modality for the detection of fistulas, it can provide the earliest clue to the presence of a malignant fistula.

Endoscopic Closure of a Large Rectovesical Fistula Following Robotic Prostatectomy

Background: Rectovesical fistulae (RVF) are uncommon complications of pelvic surgeries and are a potential cause of significant morbidity. RVF are not typically closed endoscopically but rather require reoperative surgery of the lower pelvis with closure of tract, interposition of fat or omentum, and possible permanent bowel diversion. We present a unique case of a rectovesical fistula developing after robotic prostatectomy that was managed by multimodal multistage endoscopic therapy as an alternative to conventional operative repair. Case Presentation: A healthy 78-year-old Caucasian man underwent a robot-assisted laparoscopic radical prostatectomy with bilateral pelvic lymph node dissection for high-risk adenocarcinoma of the prostate. The patient's postoperative course was complicated by an unrecognized rectal injury culminating in emergent exploration, abdominal washout, creation of a diverting loop transverse colostomy, and resultant development of a large rectovesical fistula. Given the patient's hostile abdomen and desire for conservative management the fistula was managed through a combined cystoscopic and endoscopic procedure that utilized suturing and clipping to close the fistula. This novel technique was followed by a series of three subsequent endoscopic procedures that enabled us to gradually downsize the fistula over time and ultimately achieve complete closure. The patient's colostomy was eventually reversed with return of bowel continuity. Conclusion: Although uncommon, RVF are significant complications of pelvic surgery. The presence of abdominal/pelvic adhesions from previous surgeries or patient comorbidities can make open surgical repair extremely challenging or impracticable. Therefore, it is important to recognize and consider the use of endoscopic techniques as potential options for closure of rectovesical fistula in certain situations.

Complicated Diverticular Disease

The modern management of colonic diverticular disease involves grouping patients into uncomplicated or complicated diverticulitis, after which the correct treatment paradigm is instituted. Recent controversies suggest overlap in management strategies between these two groups. While most reports still support surgical intervention for the treatment of complicated diverticular disease, more data are forthcoming suggesting complicated diverticulitis does not merit surgical resection in all scenarios. Given the significant risk for complication in surgery for diverticulitis, careful attention should be paid to patient and procedure selection. Here, we define complicated diverticulitis, discuss options for surgical intervention, and explain strategies for avoiding operative pitfalls that result in early and late postoperative complications.

A Very Rare Case of Colosalpingeal Fistula Secondary to Diverticulitis: An Overview of Development, Clinical Features and Management

BACKGROUND

Colosalpingeal fistula is a rare complication secondary to diverticular disease. The pathogenesis is still not clearly understood. We present the case of a colosalpingeal fistula and a review of the management of this pathology.

CASE REPORT

A 69-year-old patient with uncomplicated diverticular disease was referred to our department for recurrent vaginal discharge. The clinical examination was unremarkable, hysteroscopy revealed the presence of air in the uterine cavity in the absence of a uterine fistula. A preliminary diagnosis of colosalpingeal fistula was made and was confirmed by computed tomography (CT) scan and hysterosalpingography. A one-stage surgery via laparotomy was successfully performed with remission of the symptoms.

CONCLUSION

Colotubal fistula is a rare complication resulting from intestinal diverticular disease. The purpose of this paper was to emphasize the presence of a rare, but serious complication occurring in diverticular disease with atypical symptoms and one-stage surgery treatment.

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.

Gouverneur' syndrome in a young Hispanic patient: A case report of a rare presentation of a rectal adenocarcinoma tumor

This is an unusual case report of 32-year-old Hispanic male who presented with an early-onset advanced stage colorectal cancer with an enterovesical fistula. A 32-year-old man presented to our institution referring suprapubic pain, urinary frequency, dysuria and tenesmus for several weeks suggesting Gouverneur’s syndrome. Patient had been treated with oral antibiotics for his recurrent urinary tract infections without resolution. Associated unintentional weight loss, decreased appetite and suprapubic pain raised concern for occult malignancy. Abdominopelvic computed tomography scan revealed a rectal mass with invasion to bladder. Colonoscopy biopsy confirmed diagnosis of moderately differentiated rectal adenocarcinoma. This report provides vital information about clinical presentations of enterovesical fistula in an imposed rectal adenocarcinoma in a young Hispanic adult with no previous family or medical history. A thorough clinical assessment must be taken to ensure accurate diagnosis and early detection of colorectal cancer in the young Hispanic population.

Evaluation of genitourinary fistulas in pelvic malignancies with etiopathologic correlation: role of cross sectional imaging in detection and management

OBJECTIVE

Genitourinary fistulas in pelvic malignancies are abnormal communications occurring due to either locally advanced tumours invading the surrounding organs or post-therapeutic complications of malignancies. In this article we review and describe the role of cross-sectional imaging findings in the management of genitourinary fistulas in pelvic malignancies.

METHODS

A retrospective study, for the period January 2012 to December 2018, was undertaken in patients with pelvic malignancies having genitourinary fistulas. The cross-sectional (CT and MRI) imaging findings in various types of fistulas were reviewed and correlated with the primary malignancy and the underlying etiopathology.

RESULTS

Genitourinary fistulas were observed in 71 patients (6 males, 65 females). 11 types of fistulas were identified in carcinomas of cervix, rectum, ovary, urinary bladder, sigmoid colon, vault, endometrium and prostate. The commonest were rectovaginal and vesicovaginal fistulas. 13 patients had multiple fistulas. The sensitivity, specificity, positive and negative predictive values of CT and MRI are 98%, 100%, 66%, 98% and 95%, 25%, 88% and 50% respectively. Contrast-enhanced CT with oral and rectal contrast is more sensitive and specific than MRI in the evaluation of genitourinary fistulas.

CONCLUSION

Imaging findings significantly influence the management and outcome of genitourinary fistulas in pelvic malignancies. Contrast-enhanced CT is the imaging modality of choice in the evaluation of pelvic fistulas associated with malignancies and MRI is complimentary to it.

ADVANCES IN KNOWLEDGE

To our knowledge, this study is the first of its kind wherein the mean duration of occurrence of fistulas in pelvic malignancies is correlated with the underlying etiopathology.