Colonoscopy after CT Diagnosis of Diverticulitis to Exclude Colon Cancer: A Systematic Literature Review

Sai, Victor; Velayos, Fernando; Neuhaus, John; Westphalen, Antonio C.

doi:10.1148/radiol.12111869

Cited by 78 publications

(53 citation statements)

References 61 publications

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“…[18][19][20][21] In these studies, the prevalence of CRC among patients with radiologically diagnosed diverticulitis ranged from 1.0% to 2.1%. However, 3 of these studies excluded patients with complicated diverticulitis and patients who underwent surgical management for their diverticular disease.…”

Section: Discussionmentioning

confidence: 98%

“…However, 3 of these studies excluded patients with complicated diverticulitis and patients who underwent surgical management for their diverticular disease. [18][19][20] The exclusion of patients with complicated diverticulitis may introduce selection bias, as the prevalence of CRC was determined only in patients with uncomplicated cases who underwent follow-up colonoscopy. The prevalence of CRC was found to be higher in patients with complicated diverticulitis diagnosed radiologically, leading some authors to conclude that only complicated diverticulitis requires follow-up colonoscopy.…”

Section: Discussionmentioning

confidence: 99%

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Colonoscopy after CT-diagnosed acute diverticulitis: Is it really necessary?

Rosenfeld

Brown

et al. 2015

cjs

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Background: Computed tomography (CT) scans are commonly used to diagnose acute diverticulitis, but there are overlapping features between diverticulitis and colorectal cancer (CRC) on imaging studies. Hence, colonoscopy is typically recommended after an episode of acute diverticulitis to rule out underlying malignancy. Currently, 64-slice multidetector CT scanners are capable of providing higher-resolution images and may be able to distinguish malignancy from diverticular inflammation. We aimed to determine the prevalence of CRC among patients with CT-diagnosed acute diverticulitis. Methods:We performed a retrospective study of patients with acute diverticulitis diagnosed on CT scan between December 2005 and December 2010 at St. Paul's Hospital, Vancouver, BC. Nonresidents were excluded. We reviewed CT scan reports that included the term "diverticulitis," reports of follow-up colonic evaluation within 1 year of diagnosis and pathology results. We queried the provincial cancer registry to ensure no cases of CRC were missed.Results: A total of 293 patients had acute diverticulitis diagnosed on CT scan, but 8 were nonresidents and were excluded. Of the 285 included in the analysis, the mean age was 59.4 ± 15.1 years, and 167 (58.6%) were men. Among the 114 patients who underwent follow-up evaluation, malignancy was diagnosed in 4 (3.5%). The overall prevalence of malignancy among patients with CT-diagnosed diverticulitis was 1.4%. Conclusion:Routine endoscopic evaluation after an episode of diverticulitis diagnosed with high-resolution CT scan does not appear to be necessary. Selective approach in patients with protracted clinical course or those with mass lesion/ obstruction on CT scan may be of benefit.Contexte : La tomodensitométrie (TDM) est couramment utilisée pour le diagnostic de la diverticulite aiguë, mais des caractéristiques sont communes à la diverticulite et au cancer colorectal (CCR) aux épreuves d'imagerie. On recommande donc en général la coloscopie après un épisode de diverticulite aiguë pour écarter un diagnostic de cancer sous-jacent. À l'heure actuelle, les appareils de TDM multidétecteurs à 64 barrettes peuvent fournir des images de haute résolution et permettent même de distinguer le cancer d'une inflammation diverticulaire. Nous avons voulu déterminer la prévalence du CCR chez les patients ayant présenté une diverticulite aiguë diagnostiquée par TDM. Résultats : En tout, 293 patients ont reçu un diagnostic de diverticulite à l'aide de la TDM; 8 étaient des non-résidents et ont été exclus. Parmi les 285 patients inclus dans l'analyse, l'âge moyen était de 59,4 ± 15,1 ans et 167 (58,6 %) étaient des hommes. Parmi les 114 patients qui ont subi un examen de suivi, le cancer a été diagnostiqué chez 4 (3,5 %). La prévalence globale du cancer chez les patients porteurs d'un diagnostic de diverticulite posé par TDM était de 1,4 %. Conclusion :L'évaluation endoscopique de routine après un épisode de diverticulite diagnostiquée à l'aide d'une TDM de haute résolution ne semble pas nécessaire. Une approc...

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Colonoscopy after CT-diagnosed acute diverticulitis: Is it really necessary?

Rosenfeld

Brown

et al. 2015

cjs

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“…However, this advice is based only on expert opinion [11,12]. Recently, results have been published from retrospective studies [13][14][15][16] and one systematic review [17], showing a comparable yield from colonoscopy or other imaging studies after an episode of diverticulitis. In these studies malignant tumours were found in 0-2.8% of patients who underwent colonic imaging [13][14][15][16][17].…”

Section: Discussionmentioning

confidence: 99%

Routine Screening for Colon Cancer after Conservative Treatment of Diverticulitis

Schout¹,

Bilgen²,

Groenen

2012

Dig Surg

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Background and Aims: It is generally advised to perform colonoscopy after conservatively treated diverticulitis because colon cancer may present itself with similar symptoms, laboratory and radiological results. With this study we investigated in what percentage of patients a malignancy was found by performing routine colonoscopy or radiologic imaging after a conservatively treated episode of diverticulitis, and whether this follow-up programme could be reserved for a selected group of patients. Methods: In our hospital, routine colonoscopy or, as a second choice, radiologic imaging has been standard practice over the last decade. We collected all colonoscopy and radiologic imaging results that were conducted of all 516 patients who were diagnosed with diverticulitis in this period. Results: Of those 516 patients, 378 had undergone colonoscopy, 45 radiologic imaging and 93 did not undergo any additional investigation. Eight cases of malignant neoplasia were found in those patients (2.1%), and an additional number of 40 adenomatous polyps (9.5%). Six out of 8 patients with colon cancer reported rectal blood loss, significant weight loss or persisting abdominal pain after being treated for diverticulitis. Conclusions: In patients who were conservatively treated with routine colonoscopy or radiologic imaging for apparent diverticulitis, a malignant tumour was found in the colon in 2.1% of them. If only performed in patients reporting alarm symptoms, a case of colon cancer would be missed in only 0.5% of patients conservatively treated for diverticulitis. Therefore, screening for colon cancer after conservative treatment of diverticulitis is only indicated in symptomatic patients.

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“…A systematic literature search on the benefit of colonoscopy from the perspective of the detection of colon carcinomas up to 24 weeks after CT diagnosis of diverticulitis identified 10 studies with 771 documented patients [65]. In these, the rate of colorectal carcinomas was 2.1% (95% CI 1.2-3.2) and thus markedly above the expected prevalence (0.68%) in the US population aged >55 years.…”

Section: History-taking Basic Diagnostic Procedures Differential DImentioning

confidence: 99%

Diverticular Disease: Guidelines of the German Society for Gastroenterology, Digestive and Metabolic Diseases and the German Society for General and Visceral Surgery

Kruis

Germer²,

Leifeld³

et al. 2014

Digestion

134

117

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Background: Diverticular disease is one of the most common disorders of the gastrointestinal tract. 28-45% of the population develop colonic diverticula, while about 25% suffer symptoms and about 5% complications. Aim: To create formal guidelines for diagnosis and management. Methods: Six working groups with 44 participants analyzed key questions in subject areas assigned to them. Following a systematic literature search, 451 publications were included. Consensus was obtained by agreement within the working groups, two Delphi processes and a guideline conference. Results: Targeted management of diverticular disease requires a classificatory diagnosis. A new classification was created. In addition to the clinical examination, intestinal ultrasound or computed tomography is the determining factor. Interval colonoscopy is recommended to exclude comorbidities. A low-fiber diet, obesity, lack of exercise, smoking and immunosuppression have an adverse impact on diverticulosis. This can lead to diverticulitis. Antibiotics are no longer recommended in uncomplicated diverticulitis if no risk factors such as immunosuppression are present. If close monitoring is ensured, uncomplicated diverticulitis can be treated on an outpatient basis. Complicated diverticulitis should be treated in hospital, involving broad-spectrum antibiotic therapy, where necessary abscess drainage, and surgery, if possible laparoscopically. In the case of chronic relapsing diverticulitis, the risk of perforation decreases with each episode, so that surgery is no longer recommended after the second episode but only following individual assessment. Conclusions: New findings on diverticular disease call into question the overuse of antibiotics and excessive indications for surgery. Targeted treatment requires a precise diagnosis and intensive interdisciplinary cooperation. i 2014 S. Karger AG, Basel

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Colonoscopy after CT Diagnosis of Diverticulitis to Exclude Colon Cancer: A Systematic Literature Review

Cited by 78 publications

References 61 publications

Colonoscopy after CT-diagnosed acute diverticulitis: Is it really necessary?

Colonoscopy after CT-diagnosed acute diverticulitis: Is it really necessary?

Routine Screening for Colon Cancer after Conservative Treatment of Diverticulitis

Diverticular Disease: Guidelines of the German Society for Gastroenterology, Digestive and Metabolic Diseases and the German Society for General and Visceral Surgery

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