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https://www.readbyqxmd.com/read/28932721/clinical-significance-of-preoperative-virtual-colonoscopy-for-evaluation-of-the-proximal-colon-in-patient-with-obstructive-colorectal-cancer
#1
Jae-Hyuk Heo, Chun-Geun Ryu, Eun-Joo Jung, Jin-Hee Paik, Dae-Yong Hwang
PURPOSE: Virtual colonoscopy is the most recently developed tool for detecting colorectal cancers and polyps, but its effectiveness is limited. In our study, we compared the result of preoperative virtual colonoscopy to result of preoperative and postoperative colonoscopy. We evaluated also the accuracy of preoperative virtual colonoscopy in patients who had obstructive colorectal cancer that did not allow passage of a colonoscope. METHODS: A total of 164 patients who had undergone preoperative virtual colonoscopy and curative surgery after the diagnosis of a colorectal adenocarcinoma between November 2008 and August 2013 were pooled...
August 2017: Annals of Coloproctology
https://www.readbyqxmd.com/read/28931879/longitudinal-analysis-of-colon-crypt-stem-cell-dynamics-in-sulindac-treated-familial-adenomatous-polyposis-patients
#2
Huiying Ma, Lodewijk A A Brosens, Sjoerd G Elias, Folkert H M Morsink, Isaac J Nijman, Linda M Hylind, Elizabeth A Montgomery, G Johan A Offerhaus, Francis M Giardiello, Wendy W J de Leng
The non-steroidal anti-inflammatory drug sulindac decreases size and number of adenomas after 4-6 months of treatment for familial adenomatous polyposis (FAP) patients. However, the underlying mechanism remains unknown. As stem cells are thought to be the tumor precursor cells, visualizing their behavior is crucial for monitoring tumor progression. Increased tag diversity in inactive genes is indicative of a protracted clonal evolution and consequently, increased risk for tumor formation. Therefore, the effect of sulindac on stem cell dynamics was studied...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28930817/cronkhite-canada-syndrome-associated-with-colon-cancer-metastatic-to-liver-a-case-report
#3
Jing Wang, Lei Zhao, Nina Ma, Juanjuan Che, Huihui Li, Bangwei Cao
RATIONALE: Cronkhite-Canada Syndrome (CCS) is an idiopathic, nonhereditary syndrome haracterized by gastrointestinal (GI) polyposis and ectodermal changes including alopecia, onychatrophia, and pigmentation. CCS colon polyps were previously considered to be benign neoplasms. However, serrated adenoma was reported to be associated with malignant neoplasms in some cases of gastric and colorectal carcinomas, and esophageal cancers. Although malignant colon and gastric cancer have been reported in CCS, reports of distant metastasis have been rare in CCS...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28929387/distinct-histopathological-characteristics-in-colorectal-submucosal-invasive-carcinoma-arising-in-sessile-serrated-adenoma-polyp-and-conventional-tubular-adenoma
#4
Takashi Murakami, Hiroyuki Mitomi, Takashi Yao, Tsuyoshi Saito, Tomoyoshi Shibuya, Naoto Sakamoto, Taro Osada, Sumio Watanabe
The histopathological characteristics of colorectal submucosal invasive carcinoma arising in sessile serrated adenoma/polyp (SSA/P), a rare malignant tumour, have not yet been fully elucidated. To investigate the features of such, we retrospectively analysed 40 submucosal invasive carcinomas with SSA/P (CA-SSA/P) and compared them to 129 cases of submucosal invasive carcinoma with conventional tubular adenoma (CA-AD). We additionally performed hMLH1 immunostaining. CA-SSA/Ps were significantly smaller than CA-ADs (P < 0...
September 19, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28928815/the-concept-of-semi-clean-colon-using-the-pit-pattern-classification-system-has-the-potential-to-be-acceptable-in-combination-with-a-3-year-surveillance-colonoscopy
#5
Yasuharu Maeda, Shin-Ei Kudo, Kunihiko Wakamura, Hideyuki Miyachi, Masashi Misawa, Yuichi Mori, Noriyuki Ogata, Toyoki Kudo, Kenta Kodama, Tomokazu Hisayuki, Takemasa Hayashi, Atsushi Katagiri, Fumio Ishida
Histological features of colorectal lesions are currently evaluated via a magnifying chromoendoscopy [pit pattern (PIT) classification]. Advanced histological features are rarely observed in diminutive (≤5 mm) adenomatous polyps (DAPs). The Japanese guidelines indicate that diminutive neoplastic lesions without carcinomatous findings may be left untreated and followed up. At the present institution, DAPs with type IIIL PIT are left untreated in various cases, whereas lesions with type III, IV or V PIT are typically resected via routine colonoscopy...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927131/protein-expression-of-fragile-histidine-triad-and-cyclooxgenase-2-in-serrated-neoplasia-of-the-colorectum
#6
Akihiro Tamoto, Kazuo Yashima, Kohei Hosoda, Sohei Yamamoto, Soichiro Kawata, Yuichiro Ikebuchi, Kazuya Matsumoto, Koichiro Kawaguchi, Kenichi Harada, Yoshikazu Murawaki, Hajime Isomoto
The adenoma-carcinoma sequence (ACS) and the serrated pathway are two distinct developmental routes leading to the formation of colorectal carcinoma (CRC). However, the mechanism triggered by the serrated pathway remains unclear. Therefore, to clarify the molecular and clinicopathological characteristics of the serrated tumorigenic pathway, immunohistochemistry was used to examine the expression of Fragile Histidine Triad (FHIT), cyclooxygenase-2 (COX-2), MutL homolog 1 (MLH1), MutS protein homolog 2 (MSH2) and P53 in endoscopically resected samples of 62 serrated polyps...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28926902/-comparative-study-of-two-rounds-of-colorectal-cancer-screening-in-80-000-targeted-population-in-haining
#7
C X Jiang, X P Wang, Y Z Shen
Objective: To compare the results of two rounds of colorectal cancer screening in Haining, explore the long-term mechanism and interval time of screening during the prevention and control of colorectal cancer, and establish practical basis for the rational prevention and control strategies. Methods: Between 2007 to 2010 and 2013 to 2015, a total of 80, 000 cases who had completed two rounds of tumor screening were enrolled and analyzed. All cases comes from five towns in Haining. Results: The first round of screening was performed in 80 603 cases and 12...
September 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28926134/early-genetic-aberrations-in-patients-with-sporadic-colorectal-cancer
#8
Brooke R Druliner, Xiaoyang Ruan, Hugues Sicotte, Daniel O'Brien, Hongfang Liu, Jean-Pierre A Kocher, Lisa Boardman
Chromosome instability (CIN) is widely observed in both sporadic and hereditary colorectal cancer (CRC). Defects in APC and WNT signaling are primarily associated with CIN in hereditary CRC, but the genetic causes for CIN in sporadic CRC remain elusive. Using high-density SNP array and exome data from The Cancer Genome Atlas, we characterized loss of heterozygosity (LOH) and copy number variation (CNV) in the peripheral blood, normal colon and corresponding tumor tissue in 15 CRC patients with proficient mismatch repair (MMR) and 24 CRC patients with deficient MMR...
September 19, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28924601/incidental-colorectal-focal-18-f-fdg-uptake-a-novel-indication-for-colonoscopy
#9
Eugénie Rigault, Laurence Lenoir, Guillaume Bouguen, Mael Pagenault, Astrid Lièvre, Etienne Garin, Laurent Siproudhis, Jean-François Bretagne
BACKGROUND AND STUDY AIMS:  The relevance of incidental colorectal focal (18) F-FDG PET/CT uptake is debatable. All patients who were referred for colonoscopy because of incidental colonic focal FDG uptake were included in this retrospective study. PATIENTS AND METHODS:  PET/CT imaging characteristics were reviewed by a nuclear physician who was blinded to endoscopic and histopathological findings to determine the location of FDG uptake sites and to measure the maximum standardized uptake values (SUVmax) and metabolic volume (MV)...
September 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28924600/alcoholic-liver-disease-is-a-strong-predictor-of-colorectal-polyps-in-liver-transplant-recipients
#10
Ann T Ma, Amélie Therrien, Jeanne-Marie Giard, Daniel von Renteln, Mickael Bouin
BACKGROUND AND AIMS:  Colorectal cancer (CRC) is associated with a significantly reduced survival rate in transplant recipients. The prevalence and risk factors of CRC and of colorectal polyps after orthotopic liver transplant (OLT) remain unclear. The study aim was to determine the prevalence of colorectal polyps in OLT recipients. A secondary objective was to explore possible risk factors of polyps. PATIENTS AND MATERIALS:  This was a retrospective single center study of all OLT recipients transplanted between 2007 and 2009...
September 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28924598/carbon-dioxide-insufflation-is-associated-with-increased-serrated-polyp-detection-rate-when-compared-to-room-air-insufflation-during-screening-colonoscopy
#11
Michael Riverso, Yaseen B Perbtani, Jonathan J D Shuster, Joydeep Chakraborty, Tony S Brar, Mitali Agarwal, Han Zhang, Anand Gupte, Shailendra S Chauhan, Christopher E Forsmark, Peter V Draganov, Dennis Yang
BACKGROUND AND STUDY AIMS : Sessile serrated adenomas (SSA) and traditional serrated adenomas (TSA) have been increasingly recognized as precursors of colorectal cancer. The aim of this study was to compare the effect of carbon dioxide insufflation (CO 2 I) vs. room air insufflation (AI) on serrated polyp detection rate (SPDR) and to identify factors associated with SPDR. PATIENTS AND METHODS : Single-center retrospective cohort study of 2083 screening colonoscopies performed with AI (November 2011 through January 2013) or CO 2 I (February 2013 to June 2015)...
September 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28924587/colorectal-endoscopic-submucosal-dissection-predictors-and-neoplasm-related-gradients-of-difficulty
#12
Federico Iacopini, Yutaka Saito, Antonino Bella, Takuji Gotoda, Patrizia Rigato, Walter Elisei, Fabrizio Montagnese, Giampaolo Iacopini, Guido Costamagna
BACKGROUND AND STUDY AIM:  The role of colorectal endoscopic submucosal dissection (ESD) is standardized in Japan and East Asia, but technical difficulties hinder its diffusion. The aim was to identify predictors of difficulty for each neoplasm type. METHODS:  A competent operator performed all procedures. ESD difficulty was defined as: en bloc with a slow speed (< 0.07 cm (2) /min; 30 × 30 mm neoplasm in > 90 min), conversion to endoscopic mucosal resection, or resection abandonment...
September 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28923859/upregulation-of-cystathionine-%C3%AE-synthase-in-colonic-epithelia-reprograms-metabolism-and-promotes-carcinogenesis
#13
Ches'Nique M Phillips, John Zatarain, Michael E Nicholls, Craig Porter, Steve G Widen, Ketan Thanki, Paul Johnson, Muhammad U Jawad, Mary Pat Moyer, James W Randall, Judith L Hellmich, Manjit Maskey, Suimin Qiu, Thomas Wood, Nadiya Druzhyna, Bartosz Szczesny, Katalin Modis, Csaba Szabo, Celia Chao, Mark R Hellmich
The transsulfuration enzyme cystathionine-β-synthase (CBS) and its product hydrogen sulfide (H2S) are aberrantly upregulated in colorectal cancers, where they contribute to tumor growth and progression by both autocrine and paracrine mechanisms. However, it is unknown whether the CBS/H2S axis plays a role in colorectal carcinogenesis. Here, we report upregulation of CBS in human biopsies of precancerous adenomatous polyps and show that forced upregulation of CBS in an adenoma-like colonic epithelial cell line is sufficient to induce metabolic and gene expression profiles characteristic of colorectal cancer cells...
September 18, 2017: Cancer Research
https://www.readbyqxmd.com/read/28923497/cholera-vaccine-use-is-associated-with-a-reduced-risk-of-death-in-patients-with-colorectal-cancer-a-population-based-study
#14
Jianguang Ji, Jan Sundquist, Kristina Sundquist
BACKGROUND & AIMS: Cholera toxin can act as a modulator of the immune response with anti-inflammatory effects; it reduces development of colon polyps in mouse models of colorectal cancer (CRC). We performed a population-based study to determine whether, in patients with a diagnosis of CRC, subsequent administration of the cholera vaccine (killed Vibrio cholerae O1 whole cells and recombinant cholera toxin B subunit) affects mortality. METHODS: We identified patients from the Swedish Cancer Register who were diagnosed with CRC from July 2005 through December 2012...
September 15, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28910195/elevated-neutrophil-to-lymphocyte-ratio-in-metabolic-syndrome-is-associated-with-increased-risk-of-colorectal-adenoma
#15
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/28906419/outcome-analyses-of-15-189-screenings-via-colonoscopy
#16
Lan Liu, Hongwei Gao, Weihua Yu, Shanyan Zhang, Jianqiang Guo, Kongxi Zhu
PURPOSE: This study investigated the detection rates of common colorectal diseases during colonoscopy procedures to provide reference for clinical diagnoses in China. METHODS: A total of 15,189 participants, who underwent total colonoscopy, were studied. We analyzed the detection rates of common colorectal diseases in different sex, age, and decade groups. RESULTS: The most common indication for colonoscopy is abdominal pain followed by change in bowel habits...
September 12, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28902739/high-definition-i-scan-colonoscopy-is-superior-in-the-detection-of-diminutive-polyps-compared-with-high-definition-white-light-colonoscopy-a-prospective-randomized-controlled-trial
#17
Jing Shan, Li Liu, Xiaobin Sun, Weidong Xi, Mei Yang, Yu Tang, Chunrong Ren, Wei Shi
INTRODUCTION: Recognition of flat and small neoplastic lesions by colonoscopy is still challenging. High-definition (HD) i-Scan colonoscopy is a promising technique to maximize the sensitivity of colonoscopy; however, whether i-Scan can increase the detection rate of polyps is still unclear. The aim of this study was to prospectively compare HD i-Scan colonoscopy with HD colonoscopy for the detection rate of polyps in routine practice. MATERIALS AND METHODS: A total of 449 patients who underwent total colonoscopy for the first time were randomized in a 1 : 1 ratio to undergo HD+i-Scan colonoscopy or HD colonoscopy...
September 11, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28898922/cold-versus-hot-endoscopic-mucosal-resection-for-nonpedunculated-colorectal-polyps-sized-6-10-mm-a-randomized-trial
#18
Vasilios Papastergiou, Konstantina D Paraskeva, Maria Fragaki, Ioannis Dimas, Emmanouil Vardas, Angeliki Theodoropoulou, Nicoletta Mathou, Athanasios Giannakopoulos, Konstantinos Karmiris, Afroditi Mpitouli, Dimitra Apessou, Linda Giannikaki, John A Karagiannis, Grigorios Chlouverakis, Gregorios A Paspatis
Background and study aims Cold snare polypectomy is an established method for the resection of small colorectal polyps; however, significant incomplete resection rates still leave room for improvement. We aimed to assess the efficacy of cold snare endoscopic mucosal resection (CS-EMR), compared with hot snare endoscopic mucosal resection (HS-EMR), for nonpedunculated polyps sized 6 - 10 mm. Patients and methods This study was a dual-center, randomized, noninferiority trial. Consecutive adult patients with at least one nonpedunculated polyp sized 6 - 10 mm were enrolled...
September 12, 2017: Endoscopy
https://www.readbyqxmd.com/read/28895412/predictive-values-of-fap-and-hgf-for-tumor-angiogenesis-and-metastasis-in-colorectal-cancer
#19
T H Ma, C C Gao, R Xie, X Z Yang, W J Dai, J L Zhang, W Yan, S N Wu
This study aims to explore the correlation of hepatocyte growth factor (HGF) and fibroblast activation protein (FAP) expressions with the angiogenesis and metastasis in colorectal cancer (CRC). The immunohistochemical SABC method was used to detect HGF and FAP expressions in 127 CRC tissues, 51 colorectal polyp tissues and 28 normal tissues. HGF and FAP expressions in liver metastasis were detected using western blot to analyze the correlation of their expressions with lymph node metastasis and liver metastasis...
September 12, 2017: Neoplasma
https://www.readbyqxmd.com/read/28890813/endocuff-assisted-colonoscopy-significantly-increases-sessile-serrated-adenoma-detection-in-veterans
#20
Michael D Baek, Christian S Jackson, John Lunn, Chris Nguyen, Nicole K Shah, Steve Serrao, David Juma, Richard M Strong
BACKGROUND: Colorectal cancer (CRC) is the second most common cause of cancer related deaths in the United States. Colonoscopy is the gold standard for the detection of CRC. There are many colonoscopy quality measures and among these the adenoma detection rate (ADR) has demonstrated a significant impact in reducing mortality from CRC. The primary aim of our study was to compare ADR and distribution of polyp type in patients undergoing Endocuff-assisted colonoscopy (EAC) versus standard colonoscopy (SC) in a VA system...
August 2017: Journal of Gastrointestinal Oncology
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