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Related Concept Videos

Detailed Structure and Function of Lymph Nodes01:23

Detailed Structure and Function of Lymph Nodes

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Lymph nodes are bean-shaped structures that cluster along the lymphatic vessels in the inguinal, axillary, and cervical regions. Each node is divided into compartments by a capsule that extends trabeculae inward.
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Node Analysis for AC Circuits01:14

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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.
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Lymphatic Vessels and Lymph Transport01:16

Lymphatic Vessels and Lymph Transport

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Lymphatic vessels, known as lymphatics, are crucial in transporting lymph from peripheral tissues to our venous system. This process begins with lymph entering through tiny capillaries that branch through tissues. These capillaries have unique features such as larger diameters, thinner walls, and a distinctive one-way valve system formed by overlapping endothelial cells.
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Fluid Connective Tissues: Blood and Lymph01:20

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Blood and lymph are fluid connective tissues. They contain cells, also known as formed elements, circulating in a liquid extracellular matrix, the plasma. The formed elements are derived from hematopoietic stem cells in the bone marrow. Blood and lymph connect all vital parts and carry nutrients, oxygen, and other essential molecules like antibodies.
Blood
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Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs01:20

Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs

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Body:Bioequivalence experimental study designs are crucial methodologies used in evaluating and comparing the bioavailability of different drug products. These designs are categorized into various types: completely randomized, randomized block, repeated measures, cross and carry-over, and Latin square designs.Completely randomized designs involve randomly allocating treatments to all subjects participating in the experiment. This allocation is achieved by assigning unique random numbers to...
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Atomic Orbitals02:44

Atomic Orbitals

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An atomic orbital represents the three-dimensional regions in an atom where an electron has the highest probability to reside. The radial distribution function indicates the total probability of finding an electron within the thin shell at a distance r from the nucleus. The atomic orbitals have distinct shapes which are determined by l, the angular momentum quantum number. The orbitals are often drawn with a boundary surface, enclosing densest regions of the cloud.
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Related Experiment Video

Updated: Jan 25, 2026

Sentinel Lymph Node Mapping and Biopsy for Endometrial Cancer at Early Stage with Laparoscopy
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Sentinel Lymph Node Mapping and Biopsy for Endometrial Cancer at Early Stage with Laparoscopy

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Sentinel Lymph Node Biopsy and Complete Lymph Node Dissection for Melanoma.

Alberto Falk Delgado1, Sayid Zommorodi2,3, Anna Falk Delgado4,5

  • 1Department of Plastic Surgery, Uppsala University, Ing 85, Akademiska Sjukhuset, 75185, Uppsala, Sweden. alberto.falk-delgado@surgsci.uu.se.

Current Oncology Reports
|April 28, 2019
PubMed
Summary
This summary is machine-generated.

Optimal surgical management for invasive melanoma involves wide excision and sentinel node biopsy. Complete lymph node dissection shows no survival benefit, suggesting a decrease in open surgery for melanoma.

Keywords:
BiopsyCompleteDissectionEarlyLimb perfusionLymph nodeMelanomaMetastasisOutcomeOverall survivalRegionalReviewSentinel nodeSurgerySurgical marginSurgical oncologySurvivalTherapy

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Dissection and 2-Photon Imaging of Peripheral Lymph Nodes in Mice
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Area of Science:

  • Oncology
  • Dermatology
  • Surgical Oncology

Background:

  • Malignant melanoma treatment relies on surgical excision and lymph node assessment.
  • Optimal surgical strategies are continuously evolving with new research.

Purpose of the Study:

  • To review current data on the optimal surgical management of invasive malignant melanoma.
  • To inform clinical decisions regarding surgical interventions for melanoma patients.

Main Methods:

  • Review of recent randomized controlled trials (DeCOG, MSLT-2) and clinical guidelines (AJCC).
  • Analysis of data on surgical excision margins, sentinel node biopsy, and complete lymph node dissection.
  • Evaluation of treatments for advanced melanoma, including isolated limb perfusion/infusion.

Main Results:

  • Recommended excision margins are 1-2 cm, varying with melanoma thickness.
  • Sentinel node biopsy is indicated for specific T1b melanoma classifications.
  • Complete lymph node dissection did not improve melanoma-specific survival compared to observation after positive sentinel node biopsy.
  • Isolated limb perfusion/infusion is an option for extensive extremity metastases.

Conclusions:

  • The lack of survival benefit from complete lymph node dissection, coupled with advances in adjuvant therapies and checkpoint inhibitors, suggests a declining role for extensive open surgery in melanoma management.
  • Surgical management should be tailored based on melanoma characteristics and evolving treatment landscapes.