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Linear morphea with secondary cutaneous mucinosis
1Department of Dermatology, Yonsei University College of Medicine, Seoul, South Korea.
The American Journal of Dermatopathology
|December 1, 1992
Summary
This study details an unusual case of linear morphea in a child, a rare connective tissue disease. The findings highlight hyaluronic acid deposition in morphea, offering new insights into this condition.
Area of Science:
- Dermatology
- Rheumatology
- Pathology
Background:
- Secondary mucinosis is common in connective tissue diseases like lupus erythematosus and dermatomyositis.
- It is rarely observed in morphea, a localized scleroderma variant.
Observation:
- A 9-year-old boy presented with linearly arranged, tender, indurated plaques on his arm, chest, and back.
- Lesions were flesh-colored to erythematous.
Findings:
- Histopathology confirmed morphea with significant mucin deposition between thickened collagen bundles.
- Hyaluronic acid deposition was identified as a key feature.
Implications:
- This case expands the understanding of mucinosis in morphea.
- It suggests hyaluronic acid deposition may play a role in the pathogenesis of morphea.