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Related Concept Videos

Skin Cancer01:30

Skin Cancer

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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.
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Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the...
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Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
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The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
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Related Experiment Video

Updated: Mar 26, 2026

Author Spotlight: Anterior HR-OCT as a Non-Invasive Tool for Characterizing Ocular Surface Squamous Neoplasia
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Author Spotlight: Anterior HR-OCT as a Non-Invasive Tool for Characterizing Ocular Surface Squamous Neoplasia

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Dysplastic Nevi.

Loren E Clarke1

  • 1Departments of Pathology, H179, The Penn State Hershey Medical Center, Hershey, PA 17033, USA; Department of Dermatology, The Penn State Hershey Medical Center, Hershey, PA 17033, USA.

Surgical Pathology Clinics
|February 4, 2016
PubMed
Summary
This summary is machine-generated.

Patients with multiple dysplastic nevi face higher malignant melanoma risk. Dysplastic nevi are significant melanoma risk markers, though transformation within them is rare.

Keywords:
Atypical cytologyClark's nevusDysplasticMelanoma in situNevus

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Area of Science:

  • Dermatology
  • Oncology
  • Pathology

Background:

  • Multiple dysplastic nevi are associated with an elevated risk of malignant melanoma.
  • Dysplastic nevi possess some potential for malignant transformation, though this is uncommon.

Purpose of the Study:

  • To discuss the features, diagnosis, and prognosis of dysplastic nevi.
  • To highlight key diagnostic features and potential pitfalls for melanoma, congenital nevi, and recurrent nevi.

Main Methods:

  • Review of gross, clinical, and microscopic features of dysplastic nevi.
  • Analysis of diagnostic criteria and prognostic indicators.
  • Comparison with malignant melanoma, congenital nevus, and recurrent nevus.

Main Results:

  • Dysplastic nevi are primarily significant as markers of increased melanoma risk.
  • Malignant transformation within dysplastic nevi is infrequent.
  • Understanding diagnostic nuances is crucial for accurate patient management.

Conclusions:

  • Dysplastic nevi serve as important indicators of melanoma risk.
  • Accurate diagnosis and differentiation from other nevi types are critical.
  • Further research into nevus transformation and risk stratification is warranted.