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Rosacea: a clinicopathological approach.
Kyriaki Aroni1, Eugenia Tsagroni, Andreas C Lazaris
1Department of Dermatopathology, School of Medicine, National and Kapodistrian University of Athens, Greece. aroniki@internet.gr
Dermatology (Basel, Switzerland)
|October 2, 2004
Summary
Histological examination of rosacea reveals no unique pattern, with deep dermis and subcutis involvement common. Rosacea appears to be a reaction pattern with diverse pathogenic origins.
Area of Science:
- Dermatology
- Pathology
- Gastroenterology
Background:
- Limited reports exist on rosacea histology and its clinical correlation.
- This study details histopathological features and investigates aetiopathogenesis using epidemiological, clinical, and histological data.
Purpose of the Study:
- To comprehensively describe rosacea histopathology.
- To correlate histological findings with clinical presentations.
- To explore the aetiopathogenesis of rosacea.
Main Methods:
- 73 rosacea patients underwent 4-mm punch skin biopsies including subcutaneous tissue.
- Biopsies from involved and uninvolved skin were compared in 10 patients.
- Demodex mite presence, gastro-intestinal symptoms, and Helicobacter pylori serology were assessed.
Main Results:
- No specific histological patterns were identified for erythematous-telangiectatic or papulopustular rosacea.
- Deep dermis and subcutis involvement was frequent.
- Granulomas (palisaded, elastolytic, epithelioid) were observed in 5 cases; lesional and non-lesional skin showed similar, though less severe, changes.
Conclusions:
- Rosacea exhibits no unique histological signature.
- The condition represents a reaction pattern with multiple potential pathogenic pathways.