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Related Concept Videos

Esophageal Varices-I: Introduction01:24

Esophageal Varices-I: Introduction

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Esophageal varices are dilated, tortuous veins which are found mainly in the submucosa of the lower esophagus but which may also appear higher up or extend into the stomach. They develop due to increased pressure in the portal venous system, often as a result of liver cirrhosis. This condition scars and damages the liver, impeding normal blood flow through the portal vein. To compensate, blood seeks alternative pathways, forming fragile new vessels (varices) in the esophagus and stomach. These...
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Esophageal Perforation-I: Introduction01:22

Esophageal Perforation-I: Introduction

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Esophageal perforation is a severe medical condition characterized by a breach in the integrity of the esophageal wall. This breach can occur due to various factors such as trauma, medical procedures, or underlying diseases. When the esophageal wall is compromised, it allows food, fluids, and digestive juices into the chest cavity or adjacent structures, leading to potential complications and health risks.
The location of esophageal perforation can vary, occurring anywhere along the esophagus....
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Esophageal Strictures-I: Introduction01:30

Esophageal Strictures-I: Introduction

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Esophageal strictures involve abnormal narrowing or tightening of the esophagus. They vary in length and severity, ranging from mild constriction to complete obstruction, and are classified as benign (noncancerous) or malignant (cancerous).
Etiology
The primary cause of esophageal strictures is long-standing gastroesophageal reflux disease (GERD), accounting for about 70 to 80% of adult cases. Chronic acid reflux can lead to injury and scarring of the esophageal lining, culminating in...
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Esophageal Strictures-II: Clinical Features and Management01:26

Esophageal Strictures-II: Clinical Features and Management

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Patients with esophageal strictures often experience a range of symptoms. Initially, they may have difficulty swallowing solid foods, which can progress to include liquids. Additional symptoms may involve chest pain or discomfort, regurgitating food and fluids, heartburn, unintentional weight loss, coughing or choking during meals, and hoarseness.
Healthcare providers should gather a comprehensive medical history and conduct a physical examination for diagnosis. If esophageal stricture is...
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Node Analysis for AC Circuits01:14

Node Analysis for AC Circuits

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Consider an angioplasty system featuring a catheter equipped with a turbine, a critical tool for removing plaque deposits from coronary arteries. This intricate medical device operates using a circuit model reminiscent of a dual-node RLC circuit powered by a current-controlled voltage source.
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
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Esophageal Perforation-II: Clinical Manifestations and Management01:28

Esophageal Perforation-II: Clinical Manifestations and Management

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Esophageal perforations manifest in various clinical forms, influenced by factors such as the perforation's cause and location (cervical, intrathoracic, or intra-abdominal), the extent of contamination, and potential injury to adjacent mediastinal structures. The timing between the perforation occurrence and treatment initiation also affects the clinical presentation.
Clinical Manifestations:
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Related Experiment Video

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The Application of 1% Methylene Blue Dye As a Single Technique in Breast Cancer Sentinel Node Biopsy
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Sentinel node navigation surgery in esophageal cancer.

Hiroya Takeuchi1, Yuko Kitagawa2

  • 1Department of Surgery Hamamatsu University School of Medicine Hamamatsu Japan.

Annals of Gastroenterological Surgery
|January 31, 2019
PubMed
Summary

Sentinel node (SN) mapping is feasible for early esophageal cancer, offering a less invasive alternative to extensive lymphadenectomy. This technique may reduce patient morbidity and improve quality of life (QOL).

Keywords:
esophageal cancermicrometastasisradioisotopesentinel node

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Area of Science:

  • Surgical Oncology
  • Gastroenterology

Background:

  • The sentinel node (SN) concept is established for breast cancer and melanoma staging.
  • Its application in esophageal cancer is debated due to complex lymphatic drainage.
  • Extensive lymphadenectomy for thoracic esophageal cancer can increase morbidity and decrease quality of life (QOL).

Purpose of the Study:

  • To evaluate the feasibility and potential benefits of sentinel node mapping in esophageal cancer surgery.
  • To explore SN navigation surgery as a method for personalized lymph node dissection.

Main Methods:

  • Review of existing studies and meta-analyses on SN mapping in early esophageal cancer.
  • Discussion of transthoracic esophagectomy with three-field lymphadenectomy as a current standard.

Main Results:

  • Meta-analyses suggest SN mapping is feasible for early esophageal cancer.
  • SN navigation surgery could allow for tailored lymph node dissection.

Conclusions:

  • Sentinel node mapping shows promise for early esophageal cancer, potentially reducing surgical invasiveness.
  • Further multicenter trials are needed to standardize SN mapping protocols for esophageal cancer.