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colonic polyps

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https://www.readbyqxmd.com/read/28910195/elevated-neutrophil-to-lymphocyte-ratio-in-metabolic-syndrome-is-associated-with-increased-risk-of-colorectal-adenoma
#1
Jae Hyun Kim, Kyoung Im Cho, Young A Kim, Seun Ja Park
BACKGROUND: Metabolic syndrome (MetS) is an important cardiovascular risk factor for insulin resistance and has been linked to colorectal adenoma via inflammation. The neutrophil-to-lymphocyte ratio (NLR) has been suggested as an important inflammatory marker. We initiated this investigation to determine the relationship between colorectal adenoma and NLR in patients with MetS. METHODS: We examined participants who visited the Health Promotion Center at Kosin University Gospel Hospital, Busan, Korea...
September 14, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28904415/targeted-metagenome-based-analyses-show-gut-microbial-diversity-of-inflammatory-bowel-disease-patients
#2
Zhibing Qiu, Haijing Yang, Lan Rong, Weiqun Ding, Jiazhen Chen, Liang Zhong
Inflammatory bowel disease (IBD) is a multifactorial disease including both genetic and environmental factors. We compared the diversity of intestinal microbesamong a cohort of IBD patients to study the microbial ecological effects on IBD. Fecal samples from patients were sequenced with next generation sequence technology at 16S rDNA region. With statistical tools, microbial community was investigated at different level. The gut microbial diversity of Crohn's disease (CD) patients and colonic polyp (CP) patients significantly different from each other...
September 2017: Indian Journal of Microbiology
https://www.readbyqxmd.com/read/28901964/the-role-of-the-surgical-pathologist-in-the-diagnosis-of-gastrointestinal-polyposis-syndromes
#3
Christophe Rosty
Polyps of the gastrointestinal tract are very common lesions and most frequently sporadic in nature. Some polyp subtypes are associated with rare hereditary polyposis syndromes, including juvenile polyposis syndrome, Peutz-Jeghers syndrome, and Cowden syndrome. However, many sporadic benign lesions of the gastrointestinal tract can mimic some of these syndromic hamartomatous polyps. The role of the surgical pathologist is to raise the possibility of a hereditary condition in case of suggestive polyp histology and to look for clinical information to support the suspected diagnosis...
September 8, 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/28894521/a-large-intracolonic-mass-in-a-patient-with-peutz-jeghers-syndrome
#4
Ran Wang, Xingshun Qi, Xiaodong Shao, Xiaozhong Guo
Peutz-Jeghers syndrome (PJS) is characterized by scattered black pigmentations on fingers and lips and multiple polyps in the gastrointestinal tract. Patients with PJS often have severe complications secondary to multiple large polyps. Herein, we present a young woman complicated with a large polyp in her colon without any clinical symptoms. We also emphasized the necessity of early diagnosis and treatment of multiple polyps in such patients.
July 2017: Middle East Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28885303/validation-of-probe-based-confocal-laser-endomicroscopy-pcle-criteria-for-diagnosing-colon-polyp-histology
#5
Sreekar Vennelaganti, Prashanth Vennalaganti, Sharad Mathur, Satish Singh, Mazen Jamal, Vijay Kanakadandi, Tarun Rai, Matthew Hall, Neil Gupta, Venkat Nutalapati, Benjamin Alsop, Benjamin Hornung, Prateek Sharma
BACKGROUND: Validated probe-based confocal endomicroscopy (pCLE) criteria for distinguishing hyperplastic polyps (HPs) and tubular adenomas (TA) have not yet been developed. AIM: To develop pCLE criteria for distinguishing HP from TA and evaluate its performance characteristics among experts. METHODS: pCLE criteria for colon polyp histology were developed and tested in 2 phases prospectively. Phase I: 8 preliminary criteria were developed and tested internally...
September 6, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28884385/low-frequency-of-polyps-in-colonic-regions-with-diverticulosis
#6
Irving Levine, Amol S Rangnekar, Aaron Z Tokayer
PURPOSE: Conflicting evidence exists regarding any association between diverticulosis and adenomatous polyps. We evaluated the prevalence of polyps and cancer in colonic regions containing diverticula. METHODS: Six hundred consecutive colonoscopy reports from a single endoscopist were reviewed to determine prevalence and location of diverticulosis and polyps. Additionally, pathology reports of 88 colon cancer resection specimens were reviewed for the presence of diverticulosis, and compared with expected prevalence of diverticulosis in that colonic region based on the collected colonoscopy data...
September 7, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28882577/assessing-colon-polypectomy-competency-and-its-association-with-established-quality-metrics
#7
Anna M Duloy, Tonya R Kaltenbach, Rajesh N Keswani
BACKGROUND & AIMS: Inadequate polypectomy leads to incomplete resection, interval colorectal cancer, and adverse events. However, polypectomy competency is rarely reported and quality metrics are lacking. The primary aims of this study were to (1) assess polypectomy competency among a cohort of gastroenterologists, and (2) measure the correlation between polypectomy competency and established colonoscopy quality metrics (adenoma detection rate [ADR] and withdrawal time [WT]). METHODS: We conducted a prospective observational study to assess polypectomy competency amongst 13 high-volume screening colonoscopists at an academic medical center...
September 4, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28876560/what-is-the-diagnostic-yield-of-colonoscopy-in-patients-with-a-referral-diagnosis-of-constipation-in-south-africa
#8
M Mjoli, V Govindasamy, T E Madiba
BACKGROUND: Constipation is a common problem for referral to surgical and colorectal units. Its association with colorectal cancer is controversial. Some authors have found an increased incidence while others have not. The aim of this study is to investigate the incidence of colorectal cancer (CRC) and other significant colonoscopic pathologies in patients undergoing colonoscopy for constipation. METHOD: All colonoscopy reports for constipation were retrieved from our database from January 2011 to 30 June 2014...
September 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28872700/optimal-procedural-sequence-for-same-day-bidirectional-endoscopy-with-moderate-sedation-a-prospective-randomized-study
#9
Shuo-Wei Chen, Chi-Liang Cheng, Nai-Jen Liu, Jui-Hsiang Tang, Yen-Lin Kuo, Cheng-Hui Lin, Yi-Ning Tsui, Bai-Ping Lee, Hsiang-Ling Hung
BACKGROUND AND AIM: Same-day bidirectional endoscopy (BDE) is a commonly performed procedure, but the optimal sequence for the procedure with moderate conscious sedation is not well-established. We investigated the optimal sequence for same-day BDE under moderate conscious sedation and carbon dioxide insufflation in terms of sedation doses, patient discomfort, and colonoscopy performance. METHODS: We performed a prospective randomized controlled study of 120 patients who were scheduled for BDE examination...
September 5, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28867979/approach-to-incomplete-colonoscopy-new-techniques-and-technologies
#10
Diana L Franco, Jonathan A Leighton, Suryakanth R Gurudu
Colonoscopy is the most widely used screening modality for the detection and removal of colon polyps and for the prevention of colorectal cancer. To identify all colon lesions and reduce the risk of colorectal cancer, it is important to perform a complete colonoscopy. The success of screening colonoscopy depends upon several parameters, including bowel preparation and adenoma detection rate. Incomplete colonoscopy rates vary from 4% to 25% and are associated with higher rates of interval proximal colon cancer...
August 2017: Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28867685/analysis-of-fecal-short-chain-fatty-acid-concentration-in-miniature-dachshunds-with-inflammatory-colorectal-polyps
#11
Hirotaka Igarashi, Koichi Ohno, Naoaki Matsuki, Aki Fujiwara-Igarashi, Hideyuki Kanemoto, Kenjiro Fukushima, Kazuyuki Uchida, Hajime Tsujimoto
Short chain fatty acids (SCFAs) play an important role in the maintenance of colonic homeostasis, and their depletion has been reported in various gastrointestinal disorders. Inflammatory colorectal polyps (ICRPs) are a recently recognized disease specific to miniature dachshunds (MDs), and fecal dysbiosis with a reduction of SCFA-producing bacteria has been reported with this disease. Therefore, this study was performed based on the hypothesis that a reduced SCFA concentration associates with the development of ICRPs...
September 4, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28865167/colorectal-surveillance-after-segmental-resection-for-young-onset-colorectal-cancer-is-there-evidence-for-extended-resection
#12
V N Kozak, M F Kalady, M M Gamaleldin, J Liang, J M Church
AIM: Although sporadic colorectal cancer (CRC) usually occurs in patients over 50, recent evidence suggests that the incidence is increasing in younger patients. Such patients are theoretically at high risk of metachronous neoplasia and may be candidates for extended, prophylactic, colectomy. This study aimed to define the risk of metachronous cancer/adenomas during follow-up of younger patients who underwent segmental colectomy for CRC. METHOD: A CRC database was used to identify patients aged less than 50 who underwent surgery for CRC between 1994 and 2010...
September 2, 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28855108/squamoid-morules-in-the-pseudoinvasive-foci-of-colonic-polyp-morphologically-mimic-invasive-carcinoma
#13
Hee Eun Lee, Vishal S Chandan, Chung-Ta Lee, Tsung-Teh Wu
Colorectal adenomas can show focal squamous differentiation or squamoid morules. We describe histologic findings of squamoid morules in the pseudoinvasive foci of colorectal polyps mimicking invasive carcinoma. Five colonic polyps with squamoid morules in the pseudoinvasive foci were collected. Histologic review and immunostains for cytokeratin (CK) 5/6, p63, synaptophysin, and chromogranin were performed on cases with squamoid morules. Forty-seven consecutive colorectal polyps with pseudoinvasion, none of which showed squamoid morules by histology review, and their clinicopathologic features were compared with the cases containing squamoid morules...
August 27, 2017: Human Pathology
https://www.readbyqxmd.com/read/28846104/berberine-binds-rxr%C3%AE-to-suppress-%C3%AE-catenin-signaling-in-colon-cancer-cells
#14
H Ruan, Y Y Zhan, J Hou, B Xu, B Chen, Y Tian, D Wu, Y Zhao, Y Zhang, X Chen, P Mi, L Zhang, S Zhang, X Wang, H Cao, W Zhang, H Wang, H Li, Y Su, X K Zhang, T Hu
Berberine, an isoquinoline alkaloid, is a traditional oriental medicine used to treat diarrhea and gastroenteritis. Recently, we reported that it could inhibit the growth of intestinal polyp in animals and in patients with the familial adenomatous polyposis by downregulating β-catenin signaling. However, the intracellular target mediating the effects of berberine remains elusive. Here, we provide evidence that berberine inhibits β-catenin function via directly binding to a unique region comprising residues Gln275, Arg316 and Arg371 in nuclear receptor retinoid X receptor alpha (RXRα), where berberine concomitantly binding to and synergistically activating RXRα with 9-cis-retinoic acid (9-cis-RA), a natural ligand binding to the classical ligand-binding pocket of RXRα...
August 28, 2017: Oncogene
https://www.readbyqxmd.com/read/28842058/distribution-of-colorectal-polyps-implications-for-screening
#15
REVIEW
Carlo Senore, Cristina Bellisario, Nereo Segnan
BACKGROUND: During the last decades data from different studies reported modifications of the topographic distribution of colorectal cancers (CRCs), with an increased frequency of tumours in proximal colonic segments. Given the documented link between adenomas and CRC, a proximal migration of adenomas over time could be expected as well. AIM: To evaluate available evidence about the prevalence of adenomas and of sessile serrated polyps across colonic segments, the changing trends in their distribution across the colon and the diagnostic performance of screening tests currently adopted in population based screening programs for lesions located in different colonic segments...
August 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/28842055/standardisation-of-polypectomy-technique
#16
REVIEW
Alan Moss, Kumanan Nalankilli
There are several approaches to polypectomy for sessile polyps <20 mm and for pedunculated polyps. Recent evidence is leading towards standardisation of polypectomy technique. Key recent polypectomy developments include: 1. Use of cold snare polypectomy (CSP) for sessile polyps <10 mm; 2. Use of hot snare polypectomy (HSP) following submucosal injection for sessile polyps sized 10-19 mm; 3. Piecemeal cold snare polypectomy (PCSP), with or without prior submucosal injection, for select sessile polyps sized 10-19 mm, where the potential risk for an adverse event is increased (e...
August 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/28842052/polyp-detection-at-colonoscopy-endoscopist-and-technical-factors
#17
REVIEW
Douglas K Rex
The adenoma detection rate (ADR) has emerged as the most important quality measure in colonoscopy, as it predicts the risk of interval cancer after colonoscopy. Measuring and improving ADR is the central focus of the current quality movement in colonoscopy. High ADRs can be achieved by a colonoscopist with a thorough understanding of the wide range of endoscopic appearances of precancerous lesions in the colorectum, effective bowel preparation, and meticulous technique using high definition colonoscopes. The knowledgeable and effective examiner needs no adjunctive devices or techniques to achieve master level ADRs...
August 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/28839877/colonic-lesion-characterisation-skills-among-uk-endoscopists-and-the-impact-of-a-brief-training-intervention
#18
P Basford, G Longcroft-Wheaton, Reiji Higashi, Toshio Uraoka, P Bhandari
OBJECTIVE: To assess UK gastroenterology registrars' and consultants' competence in in vivo characterisation of polyps, plus the impact of a dedicated colonic lesion characterisation training intervention. DESIGN: Prospective evaluation of a computer-based colonic lesion training module. SETTING: Three UK general hospitals. PATIENTS: High-quality endoscopic images obtained during colonoscopy in a previous study. INTERVENTIONS: 30 min computer-based training module covering in vivo characterisation of colonic lesions viewed under white light, chromoendoscopy and magnification chromoendoscopy...
January 2017: Frontline Gastroenterology
https://www.readbyqxmd.com/read/28821976/dysbiosis-signature-of-mycobiota-in-colon-polyp-and-colorectal-cancer
#19
R Gao, C Kong, H Li, L Huang, X Qu, N Qin, H Qin
Microbiota refers to a colony of microorganisms, and they are found in all multicellular organisms. This colony plays a major role in both the physiology and disease of the organism it inhabits. Much attention has been paid to host-microbiota interactions, but there has been little investigation on its role in carcinogenesis. In this study, we characterized a fecal mycobiota, also known as fungal signature, for the first time with 131 subjects, comprising polyp and colorectal cancer (CRC) patients, as well as a healthy control population...
August 18, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28816375/adenocarcinoma-of-the-colon-presenting-as-a-submucosal-tumor
#20
Hourin Cho, Shigeki Sekine, Masau Sekiguchi
A 64-year-old woman underwent colonoscopy for abdominal discomfort and a protruded lesion measuring approximately 10 mm was detected in the descending colon. The tumor was entirely covered by normal-appearing mucosa and was regarded as a submucosal tumor (SMT). A small adenomatous polyp was present beside the SMT (Figure 1). For precise histological assessment of the SMT and therapeutic purpose of the coexisted polyp, we performed complete resection of the lesions by endoscopic submucosal dissection. This article is protected by copyright...
August 17, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
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