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Related Concept Videos

Diversity of Protists III01:27

Diversity of Protists III

Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
Peptic Ulcer Disease III: Clinical Manifestations and Complications01:25

Peptic Ulcer Disease III: Clinical Manifestations and Complications

Duodenal UlcersDuodenal ulcers are the most common form of peptic ulcer disease, presenting with chronic, intermittent epigastric pain. Pain typically appears 2–3 hours after meals, especially when the stomach is empty, often waking patients at night. It is characteristically relieved by food or antacids (“pain–food–relief”). Some patients remain asymptomatic until complications like bleeding or perforation emerge, particularly with NSAID or anticoagulant use.Gastric UlcersGastric ulcers share...
Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies01:28

Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies

Peptic ulcer disease (PUD) presents with diverse symptoms depending on the location and severity of the ulcer. Clinical manifestations of peptic ulcer include dull pain and a burning sensation in the mid-epigastric region.
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation01:30

Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation

Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation
Irritable Bowel Syndrome (IBS) is classified into subtypes based on the predominant bowel habits as determined by the Bristol Stool Form Scale (BSFS). The subtypes are:
Methods of Classification and Identification01:28

Methods of Classification and Identification

Bacterial identification relies on a diverse array of techniques to classify and understand microorganisms, each tailored to uncover specific characteristics. Traditional morphological approaches, while still valuable, are limited for closely related or structurally simple organisms. Modern methods integrate biochemical, serological, genetic, and advanced molecular tools to achieve greater accuracy.Morphological and Biochemical TechniquesMorphological characteristics, such as cell shape and...
Diversity of Protists IV01:27

Diversity of Protists IV

Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...

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Related Experiment Video

Updated: May 22, 2026

Inducing Complete Polyp Regeneration from the Aboral Physa of the Starlet Sea Anemone Nematostella vectensis
08:17

Inducing Complete Polyp Regeneration from the Aboral Physa of the Starlet Sea Anemone Nematostella vectensis

Published on: January 14, 2017

Serrated polyps: new classifications highlight clinical importance.

C A Messick1, J Church, A Bennett

  • 1Department of Colorectal Surgery, Digestive Disease Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA. craigatcase@yahoo.com

Colorectal Disease : the Official Journal of the Association of Coloproctology of Great Britain and Ireland
|May 5, 2012
PubMed
Summary
This summary is machine-generated.

Sessile serrated adenomas/polyps (SSA/Ps) are now recognized as having malignant potential. This study found SSA/Ps in 2.1% of colonoscopies, often coexisting with other polyps, highlighting the need for their removal.

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Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
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Published on: October 16, 2013

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Inducing Complete Polyp Regeneration from the Aboral Physa of the Starlet Sea Anemone Nematostella vectensis
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Multimodal Optical Microscopy Methods Reveal Polyp Tissue Morphology and Structure in Caribbean Reef Building Corals
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Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
15:49

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

Published on: October 16, 2013

Area of Science:

  • Gastroenterology
  • Colorectal Cancer Research
  • Pathology

Background:

  • Previously, hyperplastic polyps were considered benign.
  • Sessile serrated adenomas/polyps (SSA/Ps) are now recognized as part of the serrated pathway with malignant potential.
  • The clinical significance of this reclassification requires further definition.

Purpose of the Study:

  • To examine the incidence and characteristics of colorectal SSA/Ps.
  • To describe associated colorectal neoplasia found alongside SSA/Ps.

Main Methods:

  • Retrospective analysis of a single institution's pathology database (2004-2007).
  • Inclusion of SSA/Ps identified during colonoscopy.
  • Recording of patient demographics, SSA/P features, and colonoscopic findings.

Main Results:

  • 585 SSA/Ps were found in 519 colonoscopies (2.1% incidence).
  • Most SSA/Ps (69%) were ≥1.0 cm and predominantly right-sided (63%).
  • 439 synchronous polyps (adenomas, hyperplastic polyps) were also identified.

Conclusions:

  • SSA/Ps are uncommon lesions found during colonoscopy, sometimes with hyperplastic polyps.
  • All SSA/Ps, regardless of apparent histology, should be removed or biopsied due to their link to the serrated pathway.
  • Re-evaluating historical lesions with new definitions may refine malignancy risk assessment.