Computed Tomographic Colonography Is Valuable for Post-Treatment Evaluation and Screening of Hidden Colorectal Cancer in Patients with Cryptogenic Pyogenic Liver Abscess

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Abstract

Background/Aims: It has been demonstrated that cryptogenic pyogenic liver abscess (PLA) is associated with colonic mucosal defect, especially colorectal cancer (CRC). Therefore, the screening of CRC in patients with cryptogenic PLA is important. This study was to investigate whether computed tomographic colonography (CTC) has value as a follow-up modality as well as CRC screening tool in patients with PLA. Methods: A retrospective evaluation of 109 patients with cryptogenic PLA who underwent CTC or colonoscopy for CRC screening between July 2005 and July 2012 was performed. The patients were divided into a CTC group (n = 68) and colonoscopy group (n = 41) after treatment of liver abscess, and compared concerning the detection rate of advanced neoplasia, consisting of advanced adenomas and invasive carcinomas. Patients with advanced polyps in CTC surveillance underwent subsequent colonoscopy. Results: Advanced colonic neoplasia was detected in 9 of the 68 patients (13.2%) in the CTC group and 8 of the 41 patients (19.5%) in the conventional colonoscopy group (p = 0.42). The treatment response of all abscess lesions was clearly visualized on CTC, with complete resolution in 17.6% (12/68) of patients. After adjustment for sex and pathogens, old age (≥65 years) was significantly associated with advanced neoplasia (OR 5.481; 95% CI 1.757-17.100; p = 0.03). Conclusion: CTC has a valuable dual role as a follow-up modality and in the screening of CRC in patients with cryptogenic PLA, particularly in elderly patients over 65 years of age.

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Most cited references 26

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A global emerging disease of Klebsiella pneumoniae liver abscess: is serotype K1 an important factor for complicated endophthalmitis?

Peter C W Fung, Terry Kuo, F. Chang … (2002)

Over the past two decades in Taiwan, pyogenic liver abscess has usually been caused by a single microorganism, Klebsiella pneumoniae, and is frequently associated with the serious complication of endophthalmitis, especially in diabetic patients. However, the relationship between the clinical presentation and bacterial factors remains unclear. The aim of this study was to investigate the clinical features of patients and the serotype and ribotype of K pneumoniae liver abscess. From July 1991 to June 1998, a total of 134 cases of K pneumoniae liver abscess with 248 K pneumoniae isolates from the same patients were collected from two large medical centres in northern Taiwan. Clinical data were collected from medical records. Serotyping and ribotyping were performed using the countercurrent immunoelectrophoresis method and automated Riboprinter. Serotyping revealed that the most common serotypes were K1 (63.4%) and K2 (14.2%). K1 isolates occurred at a significantly higher frequency (p<0.01) than all other serotypes. Among 134 patients, 105 (78.4%) had suffered from diabetes mellitus for 3-15 years. Fourteen patients (10.4%) had metastatic infection to the eye causing septic endophthalmitis. Liver aspirates, and blood and vitreous pus cultures yielded the same serotype of K pneumoniae in all patients. Among patients with septic endophthalmitis, 92.3% (13/14) were diabetic, and 85.7% (12/14) of the isolates belonged to serotype K1. For molecular typing, different degrees of genetic polymorphism among isolates with the same K1 serotype suggested no particular prevalence of any one strain in K pneumoniae liver abscess. K pneumoniae serotype K1 was significantly associated with liver abscess and the complication of endophthalmitis, especially in diabetic patients. Physicians should request an immediate report of serotyping and susceptibility test results simultaneously if a diagnosis of pyogenic liver abscess has been made so that early and appropriate management for possible complications will not be delayed. The use of ceftriaxone because of its higher concentration in the aqueous humor is suggested to decrease the chance of septic endophthalmitis.

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CT colonography versus colonoscopy for the detection of advanced neoplasia.

David H. K. Kim, Perry Pickhardt, Andrew J Taylor … (2007)

Advanced neoplasia represents the primary target for colorectal-cancer screening and prevention. We compared the diagnostic yield from parallel computed tomographic colonography (CTC) and optical colonoscopy (OC) screening programs. We compared primary CTC screening in 3120 consecutive adults (mean [+/-SD] age, 57.0+/-7.2 years) with primary OC screening in 3163 consecutive adults (mean age, 58.1+/-7.8 years). The main outcome measures included the detection of advanced neoplasia (advanced adenomas and carcinomas) and the total number of harvested polyps. Referral for polypectomy during OC was offered for all CTC-detected polyps of at least 6 mm in size. Patients with one or two small polyps (6 to 9 mm) also were offered the option of CTC surveillance. During primary OC, nearly all detected polyps were removed, regardless of size, according to established practice guidelines. During CTC and OC screening, 123 and 121 advanced neoplasms were found, including 14 and 4 invasive cancers, respectively. The referral rate for OC in the primary CTC screening group was 7.9% (246 of 3120 patients). Advanced neoplasia was confirmed in 100 of the 3120 patients in the CTC group (3.2%) and in 107 of the 3163 patients in the OC group (3.4%), not including 158 patients with 193 unresected CTC-detected polyps of 6 to 9 mm who were undergoing surveillance. The total numbers of polyps removed in the CTC and OC groups were 561 and 2434, respectively. There were seven colonic perforations in the OC group and none in the CTC group. Primary CTC and OC screening strategies resulted in similar detection rates for advanced neoplasia, although the numbers of polypectomies and complications were considerably smaller in the CTC group. These findings support the use of CTC as a primary screening test before therapeutic OC. Copyright 2007 Massachusetts Medical Society.

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Population-based study of the epidemiology of and the risk factors for pyogenic liver abscess.

Gilaad Kaplan, D Gregson, Kevin B Laupland (2004)

Pyogenic liver abscess (PLA) is relatively uncommon in North America but is associated with significant morbidity and mortality. Our objective was to characterize the incidence of, risk factors for, and outcomes of PLA in a nonselected population. Population-based surveillance was conducted in the Calgary Health Region (CHR) between April 1, 1999 and March 31, 2003. All adult CHR residents with PLA were identified, and charts were reviewed. Seventy-one CHR residents developed a PLA for an annual incidence of 2.3 per 100,000 population. There was an increasing incidence of PLA with advancing age. Men were at much higher risk of acquiring a PLA as compared to women (3.3 vs 1.3 per 100,000; relative risk [RR], 2.6; 95% confidence interval [CI], 1.5-4.6; P < .001), and this was observed across all age groups. A number of comorbid conditions were associated with significantly higher risk for developing a PLA including liver transplantation patients (RR, 444.8; 95% CI, 89.5-1356.0; P < .0001), diabetics (RR, 11.1; 95% CI, 6.3-19; P < .0001), and patients with a history of malignancy (RR, 13.3; 95% CI, 6.9-24.4; P < .0001). No other solid organ transplantation patient was at increased risk. All patients required admission to hospital (median length of stay, 16 days), and 7 (10%) patients died in hospital, corresponding to a mortality rate of 0.22 per 100,000 population. This study provides important data on the burden of PLA and identifies risk groups that might potentially benefit from preventive efforts.

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Author and article information

Journal

Journal ID (publisher-id): DIG

Journal ID (nlm-ta): Digestion

Journal ID (doi): 10.1159/issn.0012-2823

Title: Digestion

Publisher: S. Karger AG

ISSN (Print): 0012-2823

ISSN (Electronic): 1421-9867

Publication date Subscription-year: 2014

Publication date (Print): June 2014

Publication date (Electronic): 01 April 2014

Volume: 89

Issue: 3

Pages: 175-183

Affiliations

^aDepartment of Internal Medicine and Liver Research Institute, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, ^bDepartment of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, and ^cDepartment of Radiology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea

Author notes

*Sang Hyub Lee, MD, PhD, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744 (Korea), E-Mail gidoctor@korea.com

Article

Publisher ID: 356534 Other ID: Digestion 2014;89:175-183

DOI: 10.1159/000356534

PubMed ID: 24714400

SO-VID: 6d536cf6-960b-48fa-adc1-08afbf6f9190

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Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

History

Date received : 11 July 2013

Date accepted : 18 October 2013

Page count

Figures: 1, Tables: 5, Pages: 9

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Computed Tomographic Colonography Is Valuable for Post-Treatment Evaluation and Screening of Hidden Colorectal Cancer in Patients with Cryptogenic Pyogenic Liver Abscess

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Abstract

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Karger: Gastroenterology

Most cited references 26

A global emerging disease of Klebsiella pneumoniae liver abscess: is serotype K1 an important factor for complicated endophthalmitis?

CT colonography versus colonoscopy for the detection of advanced neoplasia.

Population-based study of the epidemiology of and the risk factors for pyogenic liver abscess.

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