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https://www.readbyqxmd.com/read/28427752/spontaneously-arising-tumours-and-tumour-like-lesions-of-the-cervix-and-uterus-in-83-pet-guinea-pigs-cavia-porcellus
#1
C Laik-Schandelmaier, R Klopfleisch, S Schöniger, G Weiffenbach, M Staudacher, H Aupperle
Tumours and tumour-like lesions are rare findings in the genital system of guinea pigs. The aim of the present study was to characterize nodular lesions in the cervix and uterus of guinea pigs submitted for histopathological diagnosis. Samples from 83 pet animals were investigated. Cases included 64 surgically excised masses including complete uteri (n = 37), parts from uteri containing masses (n = 8), complete masses (n = 12) or samples from masses (n = 7) and 19 complete necropsy examinations. In 55 of the cases, only solitary changes were observed; in 28 cases two or more lesions were diagnosed...
April 17, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28414304/transforming-activity-and-therapeutic-targeting-of-c-terminal-binding-protein-2-in-apc-mutated-neoplasia
#2
E T Sumner, A T Chawla, A D Cororaton, J E Koblinski, R C Kovi, I M Love, B B Szomju, S Korwar, K C Ellis, S R Grossman
Overexpression of the transcriptional coregulators C-terminal binding proteins 1 and 2 (CtBP1 and 2) occurs in many human solid tumors and is associated with poor prognosis. CtBP modulates oncogenic gene expression programs and is an emerging drug target, but its oncogenic role is unclear. Consistent with this oncogenic potential, exogenous CtBP2 transformed primary mouse and human cells to anchorage independence similarly to mutant H-Ras. To investigate CtBP's contribution to in vivo tumorigenesis, Apc(min/+) mice, which succumb to massive intestinal polyposis, were bred to Ctbp2(+/-) mice...
April 17, 2017: Oncogene
https://www.readbyqxmd.com/read/28406434/preventive-effects-of-heat-killed-enterococcus-faecalis-strain-ec-12-on-mouse-intestinal-tumor-development
#3
Shingo Miyamoto, Masami Komiya, Gen Fujii, Takahiro Hamoya, Ruri Nakanishi, Kyoko Fujimoto, Shuya Tamura, Yurie Kurokawa, Maiko Takahashi, Tetsuo Ijichi, Michihiro Mutoh
Establishing effective methods for preventing colorectal cancer by so-called "functional foods" is important because the global burden of colorectal cancer is increasing. Enterococcus faecalis strain EC-12 (EC-12), which belongs to the family of lactic acid bacteria, has been shown to exert pleiotropic effects, such as anti-allergy and anti-infectious effects, on mammalian cells. In the present study, we aimed to evaluate the preventive effects of heat-killed EC-12 on intestinal carcinogenesis. We fed 5-week-old male and female Apc mutant Min mice diets containing 50 or 100 ppm heat-killed EC-12 for 8 weeks...
April 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28384603/raman-fiber-optical-method-for-colon-cancer-detection-cross-validation-and-outlier-identification-approach
#4
D Petersen, P Naveed, A Ragheb, D Niedieker, S F El-Mashtoly, T Brechmann, C Kötting, W H Schmiegel, E Freier, C Pox, K Gerwert
Endoscopy plays a major role in early recognition of cancer which is not externally accessible and therewith in increasing the survival rate. Raman spectroscopic fiber-optical approaches can help to decrease the impact on the patient, increase objectivity in tissue characterization, reduce expenses and provide a significant time advantage in endoscopy. In gastroenterology an early recognition of malign and precursor lesions is relevant. Instantaneous and precise differentiation between adenomas as precursor lesions for cancer and hyperplastic polyps on the one hand and between high and low-risk alterations on the other hand is important...
March 25, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28378694/the-role-of-narrow-band-imaging-in-colorectal-polyp-detection
#5
Irina Ioana Vișovan, Marcel Tanțău, Oliviu Pascu, Lidia Ciobanu, Alina Tanțău
Colonoscopic detection and removal of polyps represent the most important prevention method for colorectal cancer. We aimed to investigate the diagnostic yield of narrow band imaging (NBI) colonoscopy for polyp detection compared with standard colonoscopy. In this prospective study, 505 patients that underwent total colonoscopy were randomized into two groups: 226 patients in NBI group and 279 in non-NBI group (standard colonoscopy). The primary endpoints were polyp detection rate (PDR) and adenoma detection rate (ADR) in both groups...
April 5, 2017: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28320628/clinical-significance-of-contralateral-reactive-lesion-in-vocal-fold-polyp-and-cyst
#6
Jung-Hae Cho, Yong-Sug Choi, Young-Hoon Joo, Young-Hak Park, Dong-Il Sun
OBJECTIVE: We investigated the clinical significance of contralateral reactive lesions in patients undergoing laryngeal microsurgery for benign vocal fold lesions such as vocal polyps and cysts. STUDY DESIGN: This was a retrospective, single institution cohort study. METHODS: Patient medical records were reviewed for demographic characteristics; acoustic, aerodynamic, and perceptual analyses; and Voice Handicap Index score before and after laryngeal microsurgery...
March 17, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28319601/effectiveness-of-double-balloon-enteroscopy-facilitated-polypectomy-in-paediatric-patients-with-peutz-jeghers-syndrome
#7
Dalia Belsha, Arun Urs, Thomas Attard, Mike Thomson
BACKGROUND: Sizable small-bowel (SB) polyps in Peutz-Jeghers syndrome (PJS) pose a high risk for intussusception, often necessitating laparotomy and intraoperative-enteroscopy (IOE). This series examines the effectiveness of double-balloon enteroscopy (DBE) facilitated polypectomy for pediatric patients with PJS. METHODS: Prospective analysis of collected data (6 years) on all patients with PJS referred for DBE-facilitated SB polypectomy at a pediatric tertiary-referral center...
March 17, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28319429/current-standards-and-new-developments-of-colorectal-polyp-management-and-resection-techniques
#8
Daniel von Renteln, Mickael Bouin, Alan N Barkun
Colonoscopy and endoscopic removal of precancerous polyps play an important role in colorectal cancer (CRC) prevention. Improved endoscopes and quality standards have led to an increasing polyp and adenoma detection rate. Optimal polyp resection techniques and management strategies are key for an effective colonoscopy practice. Areas covered: Strategies for how to improve diminutive polyp (polyps up to 5mm in size) management are discussed because of their high prevalence. Systematic removal of diminutive polyps leads to increasing costs of colonoscopy practice, while the effect on colorectal cancer prevention might be negligible...
March 20, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28316152/-long-term-follow-up-to-identify-the-rectal-potentially-malignant-nodules-in-female-by-digital-rectal-examination
#9
S S Wang, J Y Zhou, Z J Wang, S R Su, J Sun, R G W Sharen
Objective: To investigate the characteristics of the rectal potentially malignant nodules in female by digital rectal examination (DRE). Methods: Retrospectively, we collected the medical information and follow-up of rectal nodules cases diagnosed as benign by DRE during the health check-up in our hospital from Jan 2002 to Dec 2015. All nodules were recorded position, size, shape, hardness and mobility. Statistical analysis was performed to select the potentially malignant cases of postoperative pathological diagnosis and disappeared nodules followed up by DRE...
March 14, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28314199/unusual-ultrasound-appearance-of-small-bowel-intussusception-and-secondary-bowel-obstruction-in-a-child-with-peutz-jeghers-syndrome
#10
Lei Wu, Ramesh S Iyer, George T Drugas, A Luana Stanescu
Small bowel intussusception (SBI) in pediatric patients resolves spontaneously in the majority of cases. Pathologic small bowel intussusception with a lead point is rare in children. Ultrasound (US) is the preferred initial imaging study for the diagnosis of intussusception. We report a case of long-segment SBI and secondary bowel obstruction caused by a large hamartomatous polyp. This case emphasizes unique, atypical ultrasound findings that may be encountered in small bowel intussusception, with correlative radiographic, CT (computed tomography) and intra-operative findings...
March 9, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28303455/duodenal-cancer-in-a-young-patient-with-peuts-jeghers-syndrome-harboring-an-entire-deletion-of-the-stk11-gene
#11
Satoshi Teramae, Koichi Okamoto, Kumiko Tanaka, Reika Matsumoto, Shinji Kitamura, Tetsuo Kimura, Masahiro Sogabe, Hiroshi Miyamoto, Naoki Muguruma, Yoshimi Bando, Mitsuo Shimada, Tetsuji Takayama
A 21-year-old woman with Peuts-Jeghers syndrome (PJS) was referred to our hospital for gastrointestinal surveillance. She had been diagnosed as having PJS from a young age based on her family history and the presence of mucocutaneous pigmentation on her lips and oral mucosa. Her mother and brother had PJS harboring an entire deletion of the STK11 gene. She had tetralogy of Fallot, atrial tachycardia, sick sinus syndrome, and mental retardation in her past history. Esophagogastroduodenoscopy identified a protruded lesion with a depressed area that occupied the lumen half-circumferentially in the duodenal second portion and also showed a 10-mm protruded lesion on the anterior wall of the lower gastric body...
March 16, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28289662/mucosa-associated-lymphoid-tissue-lymphoma-of-the-cecum-and-rectum-a-case-report
#12
Myung Jin Nam, Byung Chang Kim, Sung Chan Park, Chang Won Hong, Kyung Su Han, Dae Kyung Sohn, Weon Seo Park, Hee Jin Chang, Jae Hwan Oh
A colonic mucosa-associated lymphoid-tissue (MALT) lymphoma is relatively rare compared to lymphomas of the stomach or small intestine. We present a case of a MALT lymphoma in the cecum and rectum found during screening colonoscopy. A 54-year-old female, who had undergone right-breast-conserving surgery with axillary dissection due to an invasive ductal carcinoma and a left-breast excisional biopsy due to microcalcification following adjuvant chemoradiation therapy 3 years earlier, was found to have 3-mm-sized smooth elevated lesions in both the cecum and rectum...
February 2017: Annals of Coloproctology
https://www.readbyqxmd.com/read/28284884/risk-of-advanced-lesions-at-the-first-follow-up-colonoscopy-after-polypectomy-of-diminutive-versus-small-adenomatous-polyps-of-low-grade-dysplasia
#13
Orly Sneh Arbib, Valentina Zemser, Yaara Leibovici Weissman, Rachel Gingold-Belfer, Alex Vilkin, Sapir Eizenstein, Arnon Cohen, Doron Comaneshter, Shochat Tzipora, Yaron Niv, Yeuda Ringel, David Lieberman, Zohar Levi
BACKGROUND AND AIMS: The current guidelines for surveillance after polypectomy do not distinguish between diminutive (1-5 mm) and small (6-9 mm) polyps with low-grade dysplasia (LGD). We aimed to evaluate the risk for advanced neoplasia on follow-up colonoscopy. METHODS: We retrospectively analyzed 443 patients whose worst finding at index colonoscopy was polypectomy of 1 to 5 or 6 to 9 mm polyps with LGD and those who underwent a follow-up colonoscopy. RESULTS: During a mean follow-up of 32...
March 8, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28282700/-choroidal-neovascularisation-other-than-typical-neovascular-age-related-macular-degeneration
#14
D Sandner
Choroidal neovascularisation (CNV) in the context of exsudative age-related macular degeneration (nAMD) can be divided into type 1 (occult) and type 2 (classical) membranes. Retinal angiomatous proliferation (RAP) or polypoidal choroidal vasculopathy (PCV) are "rare subtypes" of chorioretinal neovascularisation and are distinguished by their distinct morphology and the sometimes worse response to therapy. Chorioretinal anastomosis, severe exsudates with serosanguinous pigment epithelial detachment and, in PCV, orange-red lesions in the papillomacular bundle can be diagnostic...
March 10, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28279811/selective-expansion-of-human-regulatory-t-cells-in-nasal-polyps-and-not-adjacent-tissue-microenvironments-in-individual-patients-exposed-to-steroids
#15
Justin A Edward, Mrinmoy Sanyal, Wei Le, Ethan Soudry, Vijay R Ramakrishnan, Dawn T Bravo, Alan L Nguyen, David Zarabanda, Todd T Kingdom, Peter H Hwang, C Garrison Fathman, Jayakar V Nayak
Severe forms of chronic rhinosinusitis (CRS), a common upper airway inflammatory disorder, are associated with nasal polyps (NPs). NP disease is ameliorated by glucocorticoid (GC) treatment, whose cellular effects are poorly understood. We therefore assessed the influence of GC therapy on NPs in CRS patients, focusing on regulatory T (Treg) cells. Treg cell populations were analyzed by flow cytometry in NPs and control tissues from GC-treated CRS patients and controls. After GC exposure, selective expansion of Treg cells was seen within NPs, and not blood or adjacent ethmoid tissues...
March 6, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28270877/hematemesis-with-gastric-laceration-after-tattooing-a-polyp-with-purified-carbon-a-review-of-the-literature
#16
Ana Isabel Gonzalez-Tallon, Miguel Rivero-Fernandez, Irina Calvo-Ramos, Antonio Diaz-Sanchez, Maria Del Rosario Gonzalez-Alonso, Elsa De la Fuente-Briongos, Rebeba Manzano-Fernandez, Eloisa Moya-Valverde, Jose Maria Riesco-Lopez, Rocio Campos-Cantero
Endoscopic tattooing is a simple and effective technique for marking small lesions, so they can be localized during surgery or in later endoscopies. Various agents can be used such as India ink or a solution of purified carbon particles. The number of complications from tattooing is relatively small, but not rare. The majority of the literature on the subject refers to complications in the colon. We present a case of gastric bleeding secondary to a laceration following tattooing with purified carbon, and a literature review...
February 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28258963/interferon-%C3%AE-induced-insufficient-autophagy-contributes-to-p62-dependent-apoptosis-of-epithelial-cells-in-chronic-rhinosinusitis-with-nasal-polyps
#17
Bao-Feng Wang, Ping-Ping Cao, Zhi-Chao Wang, Zhi-Yong Li, Zhe-Zheng Wang, Jin Ma, Bo Liao, Yi-Ke Deng, Xiao-Bo Long, Kai Xu, Heng Wang, Hai Wang, Ming Zeng, Xiang Lu, Zheng Liu
BACKGROUND: Autophagy is a lysosomal degradation pathway that is essential for cell survival, differentiation, and homeostasis. This study aimed to investigate the contribution of autophagy to the pathogenesis of CRS with nasal polyps (CRSwNP). METHODS: The expression of autophagic proteins [microtubule-associated protein 1 light chain 3B (LC3B)-II, autophagy-related proteins (Atg), and Beclin 1], substrate proteins (p62 and ubiquitinated proteins), and apoptotic signaling molecules [cysteine-aspartic protease-3 and 8, and poly-ADP-ribose polymerase] in the sinonasal mucosa and nasal epithelial cells (NECs) was detected by immunohistochemistry and Western blotting...
March 4, 2017: Allergy
https://www.readbyqxmd.com/read/28257791/safety-and-efficacy-of-cap-assisted-endoscopic-mucosal-resection-for-sporadic-nonampullary-duodenal-adenomas
#18
Laith H Jamil, Amir Kashani, Neiveen Peter, Simon K Lo
BACKGROUND AND AIMS: Eradication of sporadic non-ampullary duodenal adenomas (SNADAs) is essential due to their high rate of malignant transformation. Endoscopic mucosal resection (EMR) techniques are the alternative to the traditional surgical treatments of SNADAs. There are very limited data on the safety and efficacy of cap-assisted EMR (C-EMR) in the treatment of SNADA. METHODS: The medical records of patients who underwent C-EMR for SNADAs between July 2002 and April 2013 were retrospectively reviewed...
February 28, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28252346/lymphangioma-of-the-jejunal-mesentery-and-jejunal-polyps-presenting-as-an-acute-abdomen-in-a-teenager
#19
Jasb Jayasundara, E Perera, M V Chandu de Silva, A A Pathirana
Cystic lymphangioma of the small bowel mesentery is a rare clinical entity, especially after childhood. Medical literature reveals a limited number of such cases presenting as acute abdomen due to bowel obstruction, small bowel volvulus and bleeding into the tumour. We present the management experience of an 18-year-old woman who presented with rapid onset diffuse peritonism and raised inflammatory markers. Computed tomography showed a mass in the small bowel mesentery with suspicion of segmental bowel ischaemia...
March 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/28219690/factors-associated-with-shorter-colonoscopy-surveillance-intervals-for-patients-with-low-risk-colorectal-adenomas-and-effects-on-outcome
#20
Joseph C Anderson, John A Baron, Dennis J Ahnen, Elizabeth L Barry, Roberd M Bostick, Carol A Burke, Robert S Bresalier, Timothy R Church, Bernard F Cole, Marcia Cruz-Correa, Adam S Kim, Leila A Mott, Robert S Sandler, Douglas J Robertson
BACKGROUND & AIMS: Endoscopists do not routinely follow guidelines to survey individuals with low-risk adenomas (LRAs, 1-2 small tubular adenomas, less than 1 cm) every 5-10 years for colorectal cancer (CRC)-many endoscopists recommend shorter surveillance intervals for these individuals. We aimed to identify reasons that endoscopists recommend shorter surveillance intervals for some individuals with LRAs and determine whether timing affects outcomes at follow-up examinations. METHODS: We collected data from 1560 individuals (45-75 years old) who participated in a prospective chemoprevention trial (of vitamin D and calcium) from 2004 through 2008...
February 17, 2017: Gastroenterology
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