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Related Concept Videos

Skin Cancer01:30

Skin Cancer

Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
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Cancer Survival Analysis

Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...

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Related Experiment Video

Updated: Jun 19, 2026

A 3D Organotypic Melanoma Spheroid Skin Model
08:49

A 3D Organotypic Melanoma Spheroid Skin Model

Published on: May 18, 2018

[Problems in defining melanoma regression and prognostic implication].

C Requena1, R Botella-Estrada, V Traves

  • 1Servicio de Dermatología, Instituto Valenciano de Oncología, Valencia, España. celiareq@hotmail.com

Actas Dermo-Sifiliograficas
|November 6, 2009
PubMed
Summary
This summary is machine-generated.

Histological regression in melanoma, where the tumor retreats, is often linked to a poor prognosis. However, this review highlights inconsistent findings and proposes clear criteria to better understand its impact on melanoma outcomes.

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Area of Science:

  • Dermatology
  • Oncology
  • Pathology

Context:

  • Histological regression is observed in 10-35% of melanomas.
  • Regression involves tumor disappearance replaced by fibrosis, melanophages, inflammation, and neovascularization.
  • The prognostic significance of regression in melanoma is debated.

Purpose:

  • To review existing literature on the influence of regression on melanoma prognosis.
  • To address the inconsistencies in current research findings.
  • To propose standardized histological criteria for defining regression.

Summary:

  • Melanoma regression, characterized by tumor retreat and replacement by fibrous tissue and inflammatory cells, presents a complex prognostic challenge.
  • Existing studies show conflicting results regarding whether regression indicates a poor or favorable prognosis.
  • This review synthesizes current evidence and advocates for precise histological criteria to resolve the controversy.

Impact:

  • Aims to standardize the definition of melanoma regression for more consistent prognostic assessment.
  • Could lead to improved clinical decision-making and patient management strategies.
  • Enhances understanding of melanoma biology and tumor-host interactions.