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Juvenile polyp

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https://www.readbyqxmd.com/read/27845203/complete-mitochondrial-genome-and-evolutionary-analysis-of-turritopsis-dohrnii-the-immortal-jellyfish-with-a-reversible-life-cycle
#1
A A Lisenkova, A P Grigorenko, T V Tyazhelova, T V Andreeva, F E Gusev, A D Manakhov, A Yu Goltsov, S Piraino, M P Miglietta, E I Rogaev
Turritopsis dohrnii (Cnidaria, Hydrozoa, Hydroidolina, Anthoathecata) is the only known metazoan that is capable of reversing its life cycle via morph rejuvenation from the adult medusa stage to the juvenile polyp stage. Here, we present a complete mitochondrial (mt) genome sequence of T. dohrnii, which harbors genes for 13 proteins, two transfer RNAs, and two ribosomal RNAs. The T. dohrnii mt genome is characterized by typical features of species in the Hydroidolina subclass, such as a high A+T content (71...
November 11, 2016: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/27833772/adenomatous-polyps-in-adolescent-girl-and-boy-a-report-of-two-cases
#2
Laleh Vahedi Larijani, Maryam Ghasemi, Hassan Karami
A polyp is defined as a mass of the mucosal surface that protrudes into the lumen of the gastrointestinal tract. Neoplastic epithelial polyps are classified histologically as either benign adenoma or malignant carcinoma. The colonic polyps that most commonly present in children occur sporadically and individually and are of the juvenile type; they are most frequently associated with painless rectal hemorrhage (which is the most common symptom). Adenomatous polyps are similar to other nontumoral polyps, and it is very rare for children to have symptoms other than rectal bleeding...
2016: Case Reports in Pathology
https://www.readbyqxmd.com/read/27661969/gastrointestinal-polyposis-in-cowden-syndrome
#3
Ruthy Shaco-Levy, Kory W Jasperson, Katie Martin, N J Samadder, Randall W Burt, Jian Ying, Mary P Bronner
GOALS: To further characterize the gastrointestinal manifestations of Cowden syndrome in clinically well-annotated patients to improve the diagnosis of this syndrome. BACKGROUND: The gastrointestinal manifestations of Cowden Syndrome, an important heritable and multiorgan cancer syndrome, are not well defined. Proper diagnosis is essential for effective cancer surveillance and prevention in these patients. STUDY: Cowden patients with gastrointestinal polyps were selected for medical record and pathologic slide review...
September 22, 2016: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/27644675/accuracy-of-fdg-pet-ct-for-detection-of-incidental-pre-malignant-and-malignant-colonic-lesions-correlation-with-colonoscopic-and-histopathologic-findings
#4
Anchisa Kunawudhi, Alexandra K Wong, Tarik K Alkasab, Umar Mahmood
PURPOSE: We evaluated all PET/CTs acquired for patients without a primary diagnosis of colorectal cancer, and compared results for those who had subsequent colonoscopy within 6 months, to assess the accuracy of FDG PET/CT for detection of incidental pre-malignant polyps and malignant colon cancers. MATERIALS AND METHODS: Medical records of 9,545 patients who underwent F-18 FDG PET/CT studies over 3.5 years were retrospectively reviewed. Due to pre-existing diagnosis of colorectal cancer, 818 patients were excluded...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27631205/juvenile-polyposis-syndrome-an-unusual-case-report-of-anemia-and-gastrointestinal-bleeding-in-young-infant
#5
Yi-Han Hsiao, Chin-Hung Wei, Szu-Wen Chang, Lung Chang, Yu-Wei Fu, Hung-Chang Lee, Hsuan-Liang Liu, Chun-Yan Yeung
BACKGROUND: Juvenile polyposis syndrome, a rare disorder in children, is characterized with multiple hamartomatous polyps in alimentary tract. A variety of manifestations include bleeding, intussusception, or polyp prolapse. In this study, we present an 8-month-old male infant of juvenile polyposis syndrome initially presenting with chronic anemia. To the best of our knowledge, this is the youngest case reported in the literature. METHODS: We report a rare case of an 8-month-old male infant who presented with chronic anemia and gastrointestinal bleeding initially...
September 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27577998/current-molecular-profile-of-juvenile-nasopharyngeal-angiofibroma-first-comprehensive-study-from-india
#6
Praveen Pandey, Anupam Mishra, Ashoak Mani Tripathi, Veerendra Verma, Ritu Trivedi, Hitendra Prakash Singh, Sunil Kumar, Brijesh Patel, Vinay Singh, Shivani Pandey, Amita Pandey, Subhash Chandra Mishra
OBJECTIVE: An attempt is made to analyze the molecular behavior of juvenile nasopharyngeal angiofibroma (JNA). STUDY DESIGN: Case Series METHODS: Quantification of mRNAs expression was undertaken through real-time polymerase chain reaction in JNA (9-24) samples for VEGF-A, basic fibroblast growth factor (b-FGF), platelet-derived growth factor PDGF-A, KIT proto-oncogene receptor tyrosine kinase (c-Kit), Avian myelomatosis viral oncogene homolog (c-Myc), Harvey rat sarcoma viral oncogene homolog (H-Ras), tumor suppressor gene TP53, and androgen receptor and interleukin 6 (IL-6)...
August 31, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27573780/syndromic-gastric-polyps-at-the-crossroads-of-genetic-and-environmental-cancer-predisposition
#7
Lodewijk A A Brosens, Francis M Giardiello, G Johan Offerhaus, Elizabeth A Montgomery
Gastric polyps occur in 1-4 % of patients undergoing gastroscopy. Although most are sporadic, some gastric polyps are part of an underlying hereditary syndrome. Gastric polyps can be seen in each of the well-known gastrointestinal polyposis syndromes, but also in Lynch syndrome and in several rare not primarily gastrointestinal syndromes. In addition, Gastric Adenocarcinoma and Proximal Polyposis of the Stomach (GAPPS) is a recently described heritable syndrome characterized by isolated gastric polyposis and risk of gastric cancer...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27554815/age-dictates-a-steroid-resistant-cascade-of-wnt5a-transglutaminase-2-and-leukotrienes-in-inflamed-airways
#8
Katharina Dietz, Marta de Los Reyes Jiménez, Eva S Gollwitzer, Adam M Chaker, Ulrich M Zissler, Olof P Rådmark, Hoeke A Baarsma, Melanie Königshoff, Carsten B Schmidt-Weber, Benjamin J Marsland, Julia Esser-von Bieren
BACKGROUND: Airway remodeling is a detrimental and refractory process showing age-dependent clinical manifestations that are mechanistically undefined. The leukotriene (LT) and wingless/integrase (Wnt) pathways have been implicated in remodeling, but age-specific expression profiles and common regulators remained elusive. OBJECTIVE: We sought to study the activation of the LT and Wnt pathways during early- or late-onset allergic airway inflammation and to address regulatory mechanisms and clinical relevance in normal human bronchial epithelial cells (NHBEs) and nasal polyp tissues...
August 20, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27477802/hamartomatous-polyps-a-clinical-and-molecular-genetic-study
#9
Anne Marie Jelsig
Hamartomatous polyps (HPs) in the gastrointestinal (GI) tract are rare compared to other types of GI polyps, yet they are the most common type of polyp in children. The symptoms are usually rectal bleeding, abdominal pain, obstipation, anaemia, and/or small bowel obstruction. The polyps are typically removed concurrently with endoscopy when located in the colon, rectum, or stomach, whereas polyps in the small bowel are removed during push-enteroscopy, device-assisted enteroscopy, or by surgery. HPs can be classified as juvenile polyps or Peutz-Jeghers polyps based on their histopathological appearance...
August 2016: Danish Medical Journal
https://www.readbyqxmd.com/read/27384093/juvenile-polyps-in-denmark-from-1995-to-2014
#10
Anne Marie Jelsig, Lilian Bomme Ousager, Klaus Brusgaard, Niels Qvist
BACKGROUND: Juvenile polyps in the large bowel are rare but the most common type of polyp in children. The prevalence and incidence are unknown, and few studies exist on the occurrence in adults. They are considered not to harbor any malignant potential unless they are part of the hereditary juvenile polyposis syndrome. OBJECTIVE: We aimed to study the demographics of juvenile polyps in Denmark in a 20-year period from 1995 to 2015 in both adults and children. This is the first report on the occurrence, anatomic localization, and reoccurrence of these polyps in a whole population...
August 2016: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/27330170/how-do-coral-barnacles-start-their-life-in-their-hosts
#11
Jennie Chien Wen Liu, Jens Thorvald Høeg, Benny K K Chan
Coral-associated invertebrates are the most significant contributors to the diversity of reef ecosystems, but no studies have examined how larvae manage to settle and grow in their coral hosts. Video recordings were used to document this process in the coral barnacle Darwiniella angularis associated with the coral Cyphastrea chalcidicum Settlement and metamorphosis in feeding juveniles lasted 8-11 days and comprised six phases. The settling cyprid starts by poking its antennules into the tissue of the prospective host (I: probing stage)...
June 2016: Biology Letters
https://www.readbyqxmd.com/read/27326320/genetic-risks-and-familial-associations-of-small-bowel-carcinoma
#12
REVIEW
Santosh Shenoy
Adenocarcinoma of small intestines (SBA) is a relatively rare malignancy with poor outcomes due to delayed diagnosis. Fifty percent of patients have metastases on presentation and therefore early detection and treatment offers the best long term outcomes. Certain genetic polyposis syndromes and familial diseases are associated with increased risks for SBA. These include familial adenomatous polyposis (FAP), Lynch syndromes (LS), Juvenile polyposis syndrome, Peutz-Jeghers syndrome, Crohn's disease (CD) and celiac disease...
June 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27299422/utility-of-routine-colonic-biopsies-in-pediatric-colonoscopic-polypectomy-for-benign-juvenile-hamartomatous-polyps
#13
Michael Malandra, Sunpreet Kaur, Ashish Chogle
INTRODUCTION: Benign juvenile hamartomatous polyps are common in pediatric gastrointestinal practice. We hypothesize that in the absence of gross mucosal abnormalities, the likelihood of histologic abnormalities from routine random colonic biopsies is low. METHODS: We performed a retrospective chart review identifying patients aged 1 to 18 years who underwent complete colonoscopy and polypectomy for suspected colorectal polyps from January 1, 2004 to July 1, 2014...
June 13, 2016: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/27224637/failed-intussusception-reduction-in-children-correlation-between-radiologic-surgical-and-pathologic-findings
#14
Aikaterini Ntoulia, Sasha J Tharakan, Janet R Reid, Soroosh Mahboubi
OBJECTIVE: The objective of this study was to identify causes of irreducible intussusception after contrast enema and to correlate imaging findings with surgical and histopathologic findings. MATERIALS AND METHODS: Between 2005 and 2013, a total of 543 children underwent reduction of intussusception with the use of an enema technique (hereafter referred to as "enema reduction"). The medical records of 72 children (56 boys [mean age, 24.8 months; range, 3.8 months to 10...
August 2016: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/27212857/clinical-and-genetic-challenges-in-a-family-with-history-of-childhood-polyp-aortopathy-and-clinical-diagnosis-of-hereditary-hemorrhagic-teleangiectasia-hht
#15
Tanya Kadiyska, Alexander Nossikoff, Pencho Kratunkov, Mary Hachmerian, Ludmila Angelova
Hereditary hemorrhagic teleangiectasia (HHT) is a genetic disorder, characterized by abnormal vessel formation and arteriovenous malformations (AVMs). The so-called "Curaçao criteria" are most commonly employed for the purposes of clinical diagnosis. However, children may not exhibit the full magnitude of symptoms and the Curaçao criteria appear to be less sensitive in this setting. We describe a family, in which two members were clinically diagnosed with HHT and referred for genetic testing. As there were phenotypic features suggesting the high likelihood of combined syndrome of juvenile polyposis with hereditary hemorrhagic teleangiectasia (JPHT), we proceeded with genetic testing of SMAD4 gene as initial step, which revealed a novel frameshift mutation...
May 2016: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/27170677/neurofibromatosis-type-1-associated-inflammatory-polyp-of-the-gastrointestinal-tract-clinicopathologic-analysis-of-a-surgically-resected-case
#16
Keisuke Goto, Takuya Hirosaki, Mariko Masubuchi
The entity known as "juvenile-like (inflammatory/hyperplastic) mucosal polyps of the gastrointestinal tract in neurofibromatosis type 1 (NF1)" was recently proposed, but is not well known. Here, we describe the characteristics of this entity in a surgically resected case. The hemorrhagic 2 × 1 cm-sized polyp was resected from the ascending colon of a 55-year-old male NF1 patient. The polyp was composed of characteristic multiple mucosal protrusions and submucosal elements that included vasculopathic changes...
May 11, 2016: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27123294/a-case-of-juvenile-polyposis-of-the-stomach-with-multiple-early-gastric-cancers
#17
Ryusuke Saito, Toshikatsu Fukuda, Nobuaki Fujikuni, Tomoyuki Abe, Hironobu Amano, Masahiro Nakahara, Shuji Yonehara, Toshio Noriyuki
The present study described the case of a 24-year-old man who was diagnosed with multiple gastric hyperplastic polyps in 2004. Repeated Helicobacter pylori tests were negative, and colonoscopy revealed no specific findings. The patient started taking a proton-pump inhibitor and iron supplements as a result of anemia caused from the occasional bleeding from the polyps. The number and size of the polyps had increased over time. Endoscopic mucosal resection was occasionally performed when bleeding occurred from large polyps...
May 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27072264/expression-of-cox-2-and-p53-in-juvenile-polyposis-coli-and-its-correlation-with-adenomatous-changes
#18
Shatavisha Das Gupta, Ram Narayan Das, Ranajoy Ghosh, Anway Sen, Uttara Chatterjee, Kaushik Saha, Chhanda Datta, Prafulla Kumar Mishra, Ranjana Bandyopadhyay
INTRODUCTION: Gastrointestinal polyps commonly affect the pediatric population. The commoner variety amongst these is the solitary rectal polyp. Juvenile polyposis coli (JPC) is rare, characterized by multiple polyps occurring throughout the gut. AIM: The role of cyclooxygenase-2 (COX-2) has been implicated in gastrointestinal tumorigenesis. We aimed to look at the clinicopathological spectrum of solitary vs juvenile polyposis and compare their differences in expression of COX-2 and p53...
January 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/26947005/defining-the-polyposis-colorectal-cancer-phenotype-associated-with-the-ashkenazi-grem1-duplication-counselling-and-management-recommendations
#19
James Ziai, Ellen Matloff, Jaehyuk Choi, Ninani Kombo, Miguel Materin, Allen E Bale
Hereditary mixed polyposis is a genetically heterogeneous, autosomal dominant condition with adenomatous, hyperplastic and juvenile polyps. We conducted a comprehensive clinical evaluation of a large Ashkenazi Jewish family with this phenotype and performed extensive genetic testing. As seen in one previous report, a 40 kb duplication upstream of GREM1 segregated with the polyposis/colon cancer phenotype in this kindred. Our study confirms the association of GREM1 with mixed polyposis and further defines the phenotype seen with this mutation...
2016: Genetics Research
https://www.readbyqxmd.com/read/26870195/magnifying-chromoendoscopic-and-endocytoscopic-findings-of-juvenile-polyps-in-the-colon-and-rectum
#20
Kenichi Takeda, Shin-Ei Kudo, Yuichi Mori, Masashi Misawa, Toyoki Kudo, Kunihiko Wakamura, Takemasa Hayashi, Hideyuki Miyachi, Fumio Ishida, Haruhiro Inoue
A precise endoscopic diagnosis is necessary for endoscopic therapy for neoplastic and non-neoplastic lesions, including juvenile polyps (JPs). Therefore, the present study aimed to clarify the characteristic endoscopic findings of JPs. A total of 154 JPs were evaluated by magnifying chromoendoscopy, 20 of which were also assessed by endocytoscopy using an ultra-high magnification endoscope. Endoscopic images were evaluated in terms of gross appearance, color, pit pattern, surface inflammatory changes and vascularity of polyps...
January 2016: Oncology Letters
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