Background: Collagen is the most abundant protein in the body and the main structural component of the skin. Objective: To provide a review of the histopathology of collagen alterations and to propose a classification with the most important types of collagen anomalies in dermatopathology. The authors describe some of the main morphological clues of collagen anomalies for specific diagnosis of some cutaneous inflammatory and neoplastic conditions. Methods: The authors review histopathologic collagen anomalies, concerning both morphology and disposition in some inflammatory and neoplastic cutaneous conditions, and they review previous terminology and proposed a classification of the most important types of collagen anomalies that can be seen in dermatopathological practice. Results: Collagen anomalies in skin can be classified into lamellar fibrosis, sclerosis, and "balls" and "rings" of collagen. Lamellar fibrosis presents as long and thin collagen bundles forming a delicate network, which can be disposed in a parallel pattern, onion-bulb-like pattern, and storiform pattern. Sclerosis is characterized by large, thick, and eosinophilic bundles of collagen, which may present as a homogenous-diffuse pattern or as individual thick bundles of collagen with few or abundant number of fibroblasts between them. Finally, the authors propose the terms "balls" and "rings" of collagen. The term "balls" of collagen stands for thick, homogenous, eosinophilic, globular collagen bundles, with no distinguishable individual composing fibers, which include the floating sign and the free-floating sign. The term "rings" of collagen is characterized by sclerotic collagen arranged in a homogenous rimming pattern around vessels without independent fibers in its composition. Conclusions: Collagen anomalies may be important clues to establish specific clues for specific diagnoses in dermatopathology.
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00306932607174
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- Methotrexate for Severe Childhood Atopic Dermatiti...
- Autoimmunity and its association with regulatory T...
- Contralateral regional recurrence after elective u...
- Chemoradiation-induced hearing loss remains a majo...
- Structural characterisation of galacto-oligosaccha...
- Multiple Drug Allergy
- Occurrence and distribution of six selected endocr...
- Fatty Acid Composition of Plasma Phosphatidylcholi...
- Hidradenitis Suppurativa in Children Treated with ...
- Announcements
- EACMFS Prizes and Awards
- Editorial Board
- Interactive group therapy for the management of my...
- Superior soft tissue management
- Using virtual microscopy to deliver an integrated ...
- Public health: Extraordinary heroism
- Revolutionary self-clearing dental mirror
- Pharmacology: Common side effects
- Making the most of employee benefits
- A topical solution?
- NHS dental service utilisation and social deprivat...
- Innovative dentists wanted
- Smarter endodontic after care
- New cover series celebrates teeth in literature
- Who's chilling in your chair?
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- Use of cyanoacrylate tissue adhesive to orientate ...
- Management of upper and lower molars that are disp...
- Free flap reconstruction for patients aged 85 year...
- Intraosseous spindle cell lipoma of the mandible: ...
- Severe distortion of an orbital titanium mesh impl...
- Minimally-invasive removal of a screw in the mandi...
- Prevalence of chromosomal aberrations in Argentine...
- Delayed stinging insect reactions
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- Treatment of pharyngotympanic tube dysfunction
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- Central nervous system anomalies in craniofacial m...
- Corrigendum to “Multifactorial sleep disturbance i...
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