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Colonic polyposis

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https://www.readbyqxmd.com/read/29791426/-familiar-adenomatous-polyposis-report-of-2-cases
#1
Luis Vásquez Elera, Patricia Guzman Rojas, Manuel Sánchez Herrera, Víctor Prado, Carlos García Encinas, Eduar Albán Bravo Paredes, Alejandro Bussalleu
Familial Adenomatous polyposis (FAP) it is based on an autosomal dominant mutation which results in loss of function of theAPC tumor suppressor gene. On the other hand, Gardner syndrome is a type of FAP and is characterized for multiple colonic adenomatous polyps and extracolonic abnormalities as desmoid tumors, osteomas, lipomas, dental abnormalities, dermoid cysts and duodenal adenomas. This report aims to present two patients with FAP: The first one is a patient who presented with osteomas and hematochezia, being diagnosed with Gardner Syndrome after the colonoscopy...
January 2018: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
https://www.readbyqxmd.com/read/29783802/-clinicopathologic-and-molecular-features-of-cribriform-morular-variant-of-papillary-thyroid-carcinoma
#2
X J Cui, H O Zhao, P Su, J Chen, R Y Zhang, Y Pan, X M Ouyang, J Liu, J Q Zhang, Y Yang, R Yang, L Ding, Z Y Liu
Objective: To investigate the clinicopathologic and molecular features of the rare cribriform morular variant of papillary thyroid carcinoma (CMV-PTC). Methods: The clinicopathologic data of 10 patients with CMV-PTC were retrospectively reviewed. Immunohistochemical (IHC) staining was done using LSAB method. DNA sequencing for APC were applied using Sanger method. BRAF V600E mutation was examined using ARMS method. The cytological, morphological, IHC and molecular features were analyzed. Results: All patients were female at an average age of 27 years old...
May 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29778545/a-descriptive-model-for-a-multidisciplinary-unit-for-colorectal-and-pelvic-malformations
#3
Alejandra Vilanova-Sanchez, Devin R Halleran, Carlos A Reck-Burneo, Alessandra C Gasior, Laura Weaver, Meghan Fisher, Andrea Wagner, Onnalisa Nash, Kristina Booth, Kaleigh Peters, Charae Williams, Sarah Mayer Brown, Peter Lu, Molly Fuchs, Karen Diefenbach, Jeffrey R Leonard, Geri Hewitt, Kate McCracken, Carlo Di Lorenzo, Richard J Wood, Marc A Levitt
INTRODUCTION: Patients with anorectal malformations (ARM), Hirschsprung disease (HD), and colonic motility disorders often require care from specialists across a variety of fields, including colorectal surgery, urology, gynecology, and GI motility. We sought to describe the process of creating a collaborative process for the care of these complex patients. METHODS: We developed a model of a devoted center for these conditions that includes physicians, psychologists, social workers, nurses, and advanced practice nurses...
April 19, 2018: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29773837/microbial-networking-in-cancer-when-two-toxins-collide
#4
EDITORIAL
Sarah Tomkovich, Christian Jobin
A recent study by Dejea et al. has demonstrated that two enterotoxigenic bacteria frequently associated with sporadic colorectal cancer, Bacteroides fragilis and pks+ Escherichia coli, are found together in biofilms on tissue from patients with familial adenomatous polyposis. In preclinical mouse models, these two bacteria and their corresponding toxins work synergistically to promote colon cancer.
May 18, 2018: British Journal of Cancer
https://www.readbyqxmd.com/read/29771800/left-sided-dominance-of-early-onset-colorectal-cancers-a-rationale-for-screening-flexible-sigmoidoscopy-in-the-young
#5
Lior Segev, Matthew F Kalady, James M Church
BACKGROUND: National databases show a recent significant increase in the incidence of colorectal cancer in people younger than 50. With current recommendations to begin average-risk screening at age 50, these patients do not have the opportunity to be screened. We hypothesized that most of the cancers among the young would be left sided, which would create an opportunity for screening the young by flexible sigmoidoscopy. OBJECTIVE: This study aims to analyze the anatomic distribution of sporadic colorectal cancers in patients under the age of 50...
May 15, 2018: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/29770149/diffuse-gastric-ganglioneuromatosis-novel-presentation-of-pten-hamartoma-syndrome-case-report-and-review-of-gastric-ganglioneuromatous-proliferations-and-a-novel-pten-gene-mutation
#6
Alexander J Williams, Emily S Doherty, Michael H Hart, Douglas J Grider
Gastrointestinal ganglioneuromatous proliferations are rare, most often found in the colon, and are three types: polypoid ganglioneuromas, ganglioneuromatous polyposis, and diffuse ganglioneuromatosis. We present a case of diffuse ganglioneuromatosis in the posterior gastric wall in a nine-year-old female. To our knowledge, this is the first reported case of diffuse ganglioneuromatosis located in the stomach. Only six cases of gastric ganglioneuromatous proliferations have previously been reported, two in English and none were diffuse ganglioneuromatosis...
2018: Case Reports in Medicine
https://www.readbyqxmd.com/read/29768363/ex-vivo-resection-and-intestinal-autotransplantation-for-a-large-mesenteric-desmoid-tumor-secondary-to-familial-adenomatous-polyposis-a-case-report-and-literature-review
#7
Chao Cheng, Shuang Guo, Dakinah Eastman G B Kollie, Wanli Zhang, Jun Xiao, Jun Liu, Xiaoming Lu, Yong Xiao
RATIONALE: The mesenteric desmoid tumor requires special attention and the most demanding treatment. PATIENT CONCERNS: Here we present a rare case of a large mesenteric desmoid tumor secondary to familial adenomatous polyposis (FAP) in a 34-year-old man accepted the ex vivo resection, and intestinal autotransplantation. DIAGNOSES: A 34-year-old man was referred to our department with a 6-year history of intermittent hematochezia without any other discomfort after undergoing partial colectomy in February 2013, and 5 endoscopic mucosal resections of colon polyps between May 2012 and July 2015 due to pathological diagnosis of FAP...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29766397/novel-variant-of-unknown-significance-in-mutyh-in-a-patient-with-mutyh-associated-polyposis-a-case-to-reclassify
#8
Trilokesh D Kidambi, Dena Goldberg, Robert Nussbaum, Amie Blanco, Sarah E Umetsu, Jonathan P Terdiman, Jeffrey K Lee
MUTYH-associated polyposis (MAP) is a hereditary cancer syndrome that is caused by biallelic pathogenic variants in the MUTYH gene and should be evaluated for in patients with an attenuated colonic polyposis phenotype. Monoallelic pathogenic variants in MUTYH are associated with a moderate increased risk of colorectal cancer but not with the polyposis phenotype. We present a case of a patient presenting with multiple colonic adenomatous polyps, whose germline testing revealed a heterozygous pathogenic variant in MUTYH in exon 13, c...
May 15, 2018: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/29751773/an-unusual-finding-in-a-desmoid-type-fibromatosis-of-the-pancreas-a-case-report-and-review-of-the-literature
#9
Joseph Clarence Torres, Chen Xin
BACKGROUND: Desmoid-type fibromatoses are rare benign and fibrous tumors that account for approximately 0.03% of total neoplasms. Within this category of neoplasms, pancreatic desmoid-type fibromatosis is an extremely rare subgroup, accounting for approximately 5% of desmoid-type fibromatoses. Although the etiology is unknown, some risk factors include trauma, surgery, family history of desmoid tumor, pregnancy, use of contraceptives, genetic mutation, and familial adenomatous polyposis or Gardner syndrome...
May 12, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29739023/the-clinical-significance-and-synchronous-polyp-burden-of-large-%C3%A2-20-mm-sessile-serrated-polyps-in-patients-without-serrated-polyposis-syndrome
#10
Lobke Desomer, David J Tate, Mahesh Jayanna, Maria Pellise, Halim Awadie, Nicholas G Burgess, Duncan McLeod, Hema Mahajan, Eric Y T Lee, Stephen J Williams, Michael J Bourke
BACKGROUND:  Sessile serrated polyps (SSPs) are important precursors of colorectal carcinoma and interval cancer. Large SSPs (≥ 20 mm) outside the definition of serrated polyposis syndrome (SPS) have not been studied in comparison with SPS. We aimed to describe the characteristics of patients with large SSPs in this context. METHODS:  Patients with at least one SSP (≥ 20 mm) were eligible. Data from three consecutive colonoscopies were used to compare clinical and endoscopic characteristics in three patient groups: SPS, a solitary large SSP, and patients with at least two SSPs without fulfilling the criteria for SPS (oligo-SSP)...
May 8, 2018: Endoscopy
https://www.readbyqxmd.com/read/29736317/klf5-mediates-the-hyper-proliferative-phenotype-of-the-intestinal-epithelium-in-mice-with-intestine-specific-endogenous-k-ras-g12d-expression
#11
Mandayam O Nandan, Agnieszka B Bialkowska, Vincent W Yang
Oncogenic K-Ras activation is a common mutational event in colorectal cancer. We previously showed that transcription factor, Krüppel-like factor 5 (KLF5), contributes to intestinal polyposis in mice with K-Ras activation. At 14 months of age, Villin-Cre/LSL-K-RasG12D mice developed small intestinal and colonic hyperplastic polyps while LSL-K-RasG12D had none. The intestinal crypts of Villin-Cre/LSL-K-RasG12D mice contained a higher number of mitotic figures and increased crypt heights compared to controls...
2018: American Journal of Cancer Research
https://www.readbyqxmd.com/read/29736107/sigmoid-colon-perforation-mimics-a-tuboovarian-absces
#12
Cemile Dayangan Sayan, Mahmut Ilkin Yeral, Zehra Sema Ozkan, Gokhan Karaca, Nese Asal, Oktay Aydın, Nevin Sagsoz
Introduction: An adnexal mass may be diagnosed after a routine pelvic ultrasonographic examination or an emergent hospital admission due to rupture of ectopic pregnancy, adnexal torsion or rupture of tuboovarian abscess. It is necessary to evaluate the origin of the mass initially and to classify patients who need further evaluation and treatment for an urgent condition. Case presentation: We report a case of sigmoid colon rupture due to sigmoid colon adenocarcinoma presenting as acute abdomen with left adnexal mass in a 28 years old woman...
April 2018: Medical Archives
https://www.readbyqxmd.com/read/29696324/cribriform-morular-variant-of-papillary-thyroid-carcinoma-clinical-and-pathological-features-of-30-cases
#13
Junko Akaishi, Tetsuo Kondo, Kiminori Sugino, Yuna Ogimi, Chie Masaki, Kiyomi Y Hames, Tomonori Yabuta, Chisato Tomoda, Akifumi Suzuki, Kenichi Matsuzu, Takashi Uruno, Keiko Ohkuwa, Wataru Kitagawa, Mitsuji Nagahama, Ryohei Katoh, Koichi Ito
BACKGROUND: Cribriform-morular variant of papillary thyroid carcinoma (CMV-PTC) is rare; it may occur in cases of familial adenomatous polyposis (FAP) or be sporadic. To clarify the clinicopathological features of CMV-PTC, the medical records of these patients were investigated retrospectively. MATERIALS AND METHODS: Between 1979 and 2016, a total of 17,062 cases with PTC underwent initial surgery at Ito Hospital. Of these, 30 (0.2%) cases histologically diagnosed with CMV-PTC were reviewed...
April 25, 2018: World Journal of Surgery
https://www.readbyqxmd.com/read/29687785/filiform-polyposis-in-ulcerative-colitis-a-rare-pediatric-case
#14
Nafiye Urgancı, Derya Kalyoncu
BACKGROUND: Filiform polyposis is a rare benign condition referred to as inflammatory polyposis, or pseudopolyposis that is usually found in association with Crohn's disease, ulcerative colitis or granulomatous colitis which is formed by non-specific mucosal and submucosal reactions to previous severe inflammation. It is characterized by multiple finger-like projections most commonly in the transverse and descending colon. CASE REPORT: A 15-year-old girl with UC who had filiform polyposis is presented...
April 24, 2018: Balkan Medical Journal
https://www.readbyqxmd.com/read/29671617/oxazole-and-thiazole-analogs-of-sulindac-for-cancer-prevention
#15
Bini Mathew, Judith V Hobrath, Michele C Connelly, R Kiplin Guy, Robert C Reynolds
AIM: Experimental and epidemiological studies and clinical trials suggest that nonsteroidal anti-inflammatory drugs possess antitumor potential. Sulindac, a widely used nonsteroidal anti-inflammatory drug, can prevent adenomatous colorectal polyps and colon cancer, especially in patients with familial adenomatous polyposis. Sulindac sulfide amide (SSA) is an amide-linked sulindac sulfide analog that showed in vivo antitumor activity in a human colon tumor xenograft model. Results/methodology: A new analog series with heterocyclic rings such as oxazole or thiazole at the C-2 position of sulindac was prepared and screened against prostate, colon and breast cancer cell lines to probe the effect of these novel substitutions on the activity of sulindac analogs...
April 19, 2018: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/29650970/crosstalk-between-gut-microbiota-and-sirtuin-3-in-colonic-inflammation-and-tumorigenesis
#16
Yong Zhang, Xiao-Lan Wang, Min Zhou, Chao Kang, He-Dong Lang, Meng-Ting Chen, Suo-Cheng Hui, Bin Wang, Man-Tian Mi
Colorectal cancer (CRC) is a disease involving a variety of genetic and environmental factors. Sirtuin-3 (Sirt3) is expressed at a low level in cancer tissues of CRC, but it is unclear how Sirt3 modulates colonic tumorigenesis. In this study, we found that gut microbiota play a central role in the resistance to CRC tumor formation in wild-type (WT) mice through APC (Adenomatous Polyposis Coli)-mutant mouse microbiota transfer via Wnt signaling. We also found that Sirt3-deficient mice were hypersusceptible to colonic inflammation and tumor development through altered intestinal integrity and p38 signaling, respectively...
April 13, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29624892/antibiotic-mediated-bacteriome-depletion-in-apc-min-mice-is-associated-with-reduction-in-mucus-producing-goblet-cells-and-increased-colorectal-cancer-progression
#17
Kamaljeet Kaur, Arpit Saxena, Irina Debnath, Jacqueline L O'Brien, Nadim J Ajami, Thomas A Auchtung, Joseph F Petrosino, Alexander-Jacques Sougiannis, Sarah Depaep, Alexander Chumanevich, Phani M Gummadidala, Mayomi H Omebeyinje, Sourav Banerjee, Ioulia Chatzistamou, Paramita Chakraborty, Raja Fayad, Franklin G Berger, James A Carson, Anindya Chanda
Recent epidemiological evidence suggests that exposure to antibiotics in early-to-middle adulthood is associated with an increased risk of colorectal adenoma. However, mechanistic studies in established preclinical cancer to examine these claims are extremely limited. Therefore, we investigated the effect of long-term exposure of an antibiotic cocktail composed of Vancomycin, Neomycin, and Streptomycin, on tumor development and progression in the ApcMin/+ mouse, an established genetic model for familial adenomatous polyposis...
April 6, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29582643/chemopreventive-effects-of-edible-canna-canna-edulis-kerr-against-colorectal-carcinogenesis-effects-on-expression-of-adenomatous-polyposis-coli-and-inducible-nitric-oxide-synthase-in-rat-inflammatory-model
#18
Burhannudin, Nur Mahmudah, Sitarina Widyarini, Dewajani Purnomosari
Objective: Dietary high fibre and calcium intake has been suggested to reduce colorectal cancer risk. However, there is limited information available regarding the potential of edible canna (Ganyong), with high dietary fibre and calcium content, to act as a preventive agent for colorectal cancer. This experimental study was conducted to investigate the preventive effect of Ganyong in reducing colorectal carcinogenesis with attention to effects on adenomatous polyposis coli (APC) and inducible nitric oxide synthase (iNOS) expression...
March 27, 2018: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29549256/plk1-has-tumor-suppressive-potential-in-apc-truncated-colon-cancer-cells
#19
Monika Raab, Mourad Sanhaji, Yves Matthess, Albrecht Hörlin, Ioana Lorenz, Christina Dötsch, Nils Habbe, Oliver Waidmann, Elisabeth Kurunci-Csacsko, Ron Firestein, Sven Becker, Klaus Strebhardt
The spindle assembly checkpoint (SAC) acts as a molecular safeguard in ensuring faithful chromosome transmission during mitosis, which is regulated by a complex interplay between phosphatases and kinases including PLK1. Adenomatous polyposis coli (APC) germline mutations cause aneuploidy and are responsible for familial adenomatous polyposis (FAP). Here we study the role of PLK1 in colon cancer cells with chromosomal instability promoted by APC truncation (APC-ΔC). The expression of APC-ΔC in colon cells reduces the accumulation of mitotic cells upon PLK1 inhibition, accelerates mitotic exit and increases the survival of cells with enhanced chromosomal abnormalities...
March 16, 2018: Nature Communications
https://www.readbyqxmd.com/read/29547683/prevalence-of-synchronous-oligopolyposis-in-incident-colorectal-cancer-a-population-based-study
#20
Juan M Marqués-Lespier, Marievelisse Soto-Salgado, María González-Pons, Vanessa Méndez, Katerina Freyre, Carlos Beltrán, Luis R Pericchi, Marcia Cruz-Correa
OBJECTIVE: Colorectal cancer (CRC) is a leading causes of cancer death among men and women. The purpose of this study was to determine the prevalence of oligopolyposis (≥20 synchronous colorectal adenomas) and its associated clinicopathological characteristics in Hispanics with incident CRC. METHODS: Pathology reports from individuals diagnosed with CRC (2007 to 2011) were obtained from the PR Central Cancer Registry. Colorectal polyp burden was calculated using pathology reports and the data was normalized to colon segment size...
2018: Puerto Rico Health Sciences Journal
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