Skin Growth
Skin Growth - Related Videos
01:20
Accessory Structures of the Skin: Hair Growth and Types
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2023
Hair growth begins with the production of keratinocytes by the basal cells of the hair bulb. As new cells are deposited at the hair bulb, the hair shaft is pushed through the follicle toward the surface. Keratinization is completed as the cells are pushed to the skin surface to form the shaft of hair that is externally visible. The external hair is completely dead and composed entirely of keratin. Hair can be cut or shaven without damaging the hair structure because the cut is superficial. Most...
05:36
Human Skin Keratinocyte Isolation: A Method to Culture Primary Keratinocytes from Skin Samples
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2023
This video describes the isolation of keratinocytes—the most prominent cells of human skin's epidermal layer, by employing a combination of enzymatic digestion and mechanical disruption methods. This method helps in the preferential growth of keratinocytes over other skin cell types using a selective growth medium.
10:45
In Situ Visualization of Axon Growth and Growth Cone Dynamics in Acute Ex Vivo Embryonic Brain Slice Cultures
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Cited by 4 •
2021
This protocol demonstrates a straightforward and robust method to study in situ axon growth and growth cone dynamics. It describes how to prepare ex vivo physiologically relevant acute brain slices and provides a user-friendly analysis pipeline.
05:44
Skin Biopsy for Diagnosing Discoid Lupus Erythematosus
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Cited by 2 •
2025
Skin lesions are common and important features in many rheumatic diseases, and biopsy with pathological analysis plays a critical role in diagnosis. This article provides a detailed overview of the standardized skin biopsy procedure and, using discoid lupus erythematosus as an example, highlights the essential role of dermatopathology in diagnosing rheumatic diseases.
11:02
The Three-Dimensional Human Skin Reconstruct Model: a Tool to Study Normal Skin and Melanoma Progression
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Cited by 111 •
2011
In this report, we describe the three-dimensional skin reconstruct model which mimics human skin in architecture and composition. Melanocyte physiology, melanoma progression and the fate of dermal stem cells have been investigated using the skin reconstruct model. The model is also useful as a preclinical tool for drug assessment.
FAQs
Several biological changes can lead to a skin growth. Skin cells may proliferate, meaning they increase in number, or accumulate fluid or another material. Genetic alterations can also disrupt normal control of growth, differentiation, or tissue repair. These mechanisms help explain why lesions may appear as nodules, cysts, moles, or tumors with different clinical significance.
A localized lesion does not by itself reveal its biological category. Benign changes, inflammatory processes, and malignant tumors can all alter the skin, but they differ in underlying cause and clinical implications. Classification therefore matters because it determines whether the finding can be observed, requires treatment for an underlying condition, should be removed, or needs early intervention for skin cancer.
The most informative features include changes in appearance, associated symptoms, rate of change, and effects on surrounding tissue. Evaluation considers these findings together rather than relying on one characteristic alone. This context helps determine whether observation is reasonable or whether dermoscopy, biopsy, or another management decision is needed.
Dermoscopy and biopsy are additional evaluation tools used when clinical assessment alone may not be sufficient. They support classification of the lesion, which is central to choosing observation, removal, treatment of an underlying condition, or early intervention. Their use is guided by the growth’s appearance, symptoms, change over time, and surrounding tissue.
Clinical evaluation begins with a structured review of the growth’s appearance, symptoms, rate of change, and surrounding tissue. If those findings indicate that further characterization is necessary, dermoscopy or biopsy may be added. The resulting classification guides the next step, rather than applying the same response to every lesion.
Management depends on what the evaluation shows. A growth may be observed when its classification supports monitoring, removed when removal is appropriate, or managed by addressing an underlying condition. If findings indicate skin cancer, early intervention becomes important. Thus, management follows classification rather than responding solely to the lesion’s presence.