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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.
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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Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
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Skin Diseases and Disorders01:23

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Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
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Papillary Dermis01:11

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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.
Papillary Layer
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Related Experiment Video

Updated: Mar 8, 2026

Author Spotlight: Anterior HR-OCT as a Non-Invasive Tool for Characterizing Ocular Surface Squamous Neoplasia
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Cutaneous Horn Over the Scar with Underlying Malignancy.

B Mall, S K Arora, R D Mukhija

    Indian Journal of Dermatology, Venereology and Leprology
    |February 3, 2017
    PubMed
    Summary

    A cutaneous horn developed over a scar in a 62-year-old female. Histopathology confirmed this growth was squamous cell carcinoma, a type of skin cancer.

    Area of Science:

    • Dermatology
    • Oncology
    • Pathology

    Background:

    • Cutaneous horns are rare skin tumors often presenting as conical projections.
    • Scar tissue can be a site for various dermatological conditions, including malignancies.

    Observation:

    • A 62-year-old female patient presented with a cutaneous horn.
    • The lesion was located specifically over a pre-existing scar area.

    Findings:

    • Histopathological examination was performed on the cutaneous horn.
    • The examination definitively revealed the presence of squamous cell carcinoma.

    Implications:

    • This case highlights the importance of vigilant monitoring of scar sites for potential malignant transformation.

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  • Early detection and diagnosis of squamous cell carcinoma arising from cutaneous horns are crucial for effective patient management.