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Ultrastructural aspects of pseudoxanthoma elasticum
Hiram Larangeira de Almeida1,2, Mariana Geber de Almeida2, Valéria Magalhães Jorge2,3
1Department of Dermatology, Universidade Federal de Pelotas (UFPel) - Pelotas (RS), Brazil.
Anais Brasileiros De Dermatologia
|September 28, 2017
Summary
This study details ultrastructural skin changes in a 72-year-old woman, revealing abnormal elastic fibers and unique stone-like deposits in the dermis. These findings offer new insights into dermal pathology and connective tissue alterations.
Area of Science:
- Dermatopathology
- Connective Tissue Biology
- Ultrastructural Pathology
Background:
- Focuses on ultrastructural analysis of dermal pathology.
- Investigates a rare case of confluent yellowish papules in the cervical region.
- Examines a 72-year-old black woman with no significant comorbidities.
Observation:
- Hematoxylin-eosin staining revealed mid-dermal alterations with eosinophilic material and disrupted collagen.
- Orcein staining showed fragmented elastic fibers, some with square configurations.
- Electron microscopy identified aberrant elastic fibers and disorganized collagen.
Findings:
- Ultrastructural examination revealed fragmented, irregularly outlined elastic fibers.
- Scanning electron microscopy detected stone-like deposits (5-16 µm) associated with collagen disorganization.
- These deposits exhibited polyhedral or squared shapes, suggesting novel calcification or material deposition.
Implications:
- Highlights the potential for unusual dermal calcification or material deposition.
- Provides detailed ultrastructural insights into connective tissue abnormalities.
- Contributes to understanding rare dermatological conditions and their microscopic features.
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