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Related Concept Videos

P-N junction01:11

P-N junction

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A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
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Relative Risk01:12

Relative Risk

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Relative risk (RR) is a statistical measure commonly used in epidemiology to compare the likelihood of a particular event occurring between two groups. This metric is important for evaluating the relationship between exposure to a specific risk factor and the probability of a particular outcome. It plays a crucial role in medical research, public health studies, and risk assessment. Relative risk quantifies how much more (or less) likely an event is to occur in an exposed group compared to an...
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The Neuromuscular Junction01:19

The Neuromuscular Junction

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The nervous system consists of complex motor neuron circuits, including upper motor neurons originating from the cerebral cortex and lower motor neurons starting in the spinal cord, coordinating both voluntary and involuntary movements. Among these, somatic motor neurons activate skeletal muscles and are classified into alpha, beta, and gamma types. Alpha neurons are vital for voluntary movement coordination, while gamma neurons adjust muscle spindle sensitivity, and the function of beta...
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Anchoring Junctions01:03

Anchoring Junctions

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Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
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Adherens Junctions01:24

Adherens Junctions

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Strong contact points between adjacent cells anchor them to each other, forming tissues. Such anchoring junctions are of two types –  adherens junctions and desmosomes. Adherens junctions are abundant in tissues such as  epithelium and endothelium, forming a continuous zone of adhesion called the adhesion belt. In other tissues, such as  heart muscle, they appear as clusters, linking the cells to produce coordinated heart muscle contraction.
Adherens Junctions are Dynamic
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Gap Junctions01:27

Gap Junctions

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The cytoplasm of adjacent animal cells can exchange small molecules, ions, and secondary messengers via the communication channels which form the gap junctions. These junctions comprise a few hundred to thousands of molecular channels, each made of two halves, called the connexon hemichannel. A connexon is a hexamer of six transmembrane connexin proteins, which assemble radially, thus forming a pore or channel in the center. One connexon hemichannel docks with a corresponding connexon on the...
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Related Experiment Video

Updated: Jan 23, 2026

Sectioning Mammary Gland Whole Mounts for Lesion Identification
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Neoplastic risk in hyperplastic esophagogastric junction lesions: Comprehensive multicenter study.

Elena De Cristofaro1, Federico Barbaro2, Jérôme Rivory3

  • 1Faculty of Medicine and Surgery, Gastroenterology, University of Rome Tor Vergata, Rome, Italy.

Endoscopy International Open
|January 22, 2026
PubMed
Summary
This summary is machine-generated.

Esophagogastric junction (EGJ) hyperplastic lesions can transform into cancer. Non-polypoid morphology, ulceration, and size over 12 mm predict this neoplastic transformation, requiring careful endoscopic assessment and management.

Keywords:
Diagnosis and imaging (inc chromoendoscopy, NBI, iSCAN, FICE, CLE)Endoscopic resection (ESD, EMRc, ...)Endoscopy Upper GI TractPrecancerous conditions & cancerous lesions (displasia and cancer) stomach

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Area of Science:

  • Gastroenterology
  • Oncology
  • Endoscopic Surgery

Background:

  • Esophagogastric junction (EGJ) hyperplastic lesions are rare and often benign.
  • Their endoscopic appearance is nonspecific, complicating diagnosis.
  • Risk factors for neoplastic transformation remain unclear.

Purpose of the Study:

  • To identify predictive factors for neoplastic transformation in hyperplastic EGJ lesions.
  • To improve diagnostic accuracy and management strategies for these lesions.

Main Methods:

  • Multicenter, retrospective study of 91 endoscopically resected hyperplastic EGJ lesions.
  • Data collected from endoscopy and pathology reports.
  • Multivariable logistic regression used to identify predictive factors for neoplastic transformation.

Main Results:

  • 23% of lesions showed neoplastic transformation (dysplasia or adenocarcinoma).
  • Independent predictors included non-polypoid morphology (OR 5.48), surface ulceration (OR 11.5), and lesion size (OR 5.48).
  • Lesion size > 12 mm significantly predicted neoplastic transformation.

Conclusions:

  • Hyperplastic EGJ lesions carry a significant risk of neoplastic transformation.
  • Careful endoscopic assessment is crucial for predicting malignancy.
  • Appropriate management strategies are needed to ensure complete resection.