Skin Necrosis
Skin Necrosis - Related Videos
01:16
Necrosis
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2023
Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”. Morphological Manifestations of Necrosis Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become anucleated and die, but their...
02:12
Muscle Necrosis Assay in C. elegans Induced by a Pathogenic Aeromonas Strain
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2026
Source: Chen, Y. et. al., Evaluating Virulence and Pathogenesis of Aeromonas Infection in a Caenorhabditis elegans Model. J. Vis. Exp. (2018)This video demonstrates a muscle necrosis assay in C. elegans (Caenorhabditis elegans) using pathogenic Aeromonas strains. By feeding green fluorescent protein (GFP)-expressing worms on Aeromonas-seeded plates, the assay models bacterial infection and reveals tissue damage through fluorescence imaging. The progressive loss of muscle structure and GFP...
06:42
Murine Skin Transplantation
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Cited by 36 •
2008
Allogeneic skin transplantation is a standard model to assay host T cell responses to MHC-disparate donor antigens. This video-article provides a visual tutorial of each step involved in performing a BALB/c-->C57BL/6 skin transplant.
01:16
Cellular Injury IV: Necrosis
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2026
Necrosis is a form of irreversible cell death caused by severe injury such as ischemia, toxins, or trauma. Unlike programmed cell death, it is an uncontrolled, pathological process that typically provokes inflammation in surrounding tissues.Pathophysiologic ChangesNecrosis begins when cells sustain critical damage, leading to swelling of organelles, particularly mitochondria, and rapid ATP depletion. As energy levels decline, membrane ion pumps fail, leading to calcium influx and eventually,...
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.
FAQs
As ischemia persists, cells receive too little oxygen and nutrients to maintain normal function. Cellular injury then disrupts membrane integrity, allowing tissue damage to progress rather than remain a temporary perfusion problem. Clinically, this progression may appear as discoloration, reduced sensation, ulceration, and eventual tissue breakdown, helping clinicians judge severity and urgency.
The initiating cause shapes the clinical context in which tissue loss develops. Pressure injuries and vascular disease primarily signal problems associated with blood delivery, whereas burns, chemical injury, trauma, and severe soft-tissue infection represent other routes to tissue damage. Distinguishing these contexts matters because evaluation must identify the underlying source, not only the visible lesion.
The extent of injury matters because visible changes may represent more than a superficial abnormality. Clinicians assess how much tissue is affected to support decisions about restoring perfusion, controlling infection, removing nonviable tissue, and supporting wound healing. This links examination findings to treatment planning and helps ensure management addresses both damaged tissue and its cause.
Assessment combines several information sources rather than relying on appearance alone. Physical examination identifies local tissue changes, vascular assessment examines blood-supply concerns, and imaging or laboratory testing can add further evidence about the injury and its context. Together, these approaches help clinicians assess extent, recognize associated problems, and select an appropriate management strategy.
Management is guided by the factors sustaining tissue injury and by the condition of the affected area. Core priorities include restoring perfusion when blood supply is compromised, controlling infection when present, removing nonviable tissue, and supporting wound healing. Together, these measures address both the source of injury and the remaining tissue damage.
Across medicine, the finding can point clinicians toward different underlying settings, including pressure injuries, vascular disease, burns, and severe soft-tissue infections. Its value is therefore not limited to describing damaged skin: recognition helps organize the next clinical questions, including how extensive the injury is and which treatment priorities apply.