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Papular xanthoma in children: report and immunohistochemical study
E Fonseca1, F Contreras, J Cuevas
1Department of Dermatology, Hospital La Paz, Madrid, Spain.
Pediatric Dermatology
|June 1, 1993
Summary
Papular xanthoma in a child resolved spontaneously. Histopathology revealed foamy histiocytic cells with dermal dendrocyte features, suggesting a new classification for histiocytosis.
Area of Science:
- Dermatopathology
- Immunohistochemistry
- Histiocytosis
Background:
- Papular xanthoma is a rare skin condition.
- Understanding the cellular origins of histiocytic disorders is crucial for classification.
Observation:
- A 14-month-old boy presented with papular xanthoma.
- The eruption spontaneously resolved within four years.
Findings:
- Immunohistopathologic analysis identified foamy histiocytic cells with dermal dendrocyte phenotypes.
- Giant multinucleated cells, resembling monocyte-derived macrophages, were also observed.
Implications:
- This study suggests classifying dermal dendrocyte-derived diseases as a distinct group of histiocytoses.
- Further research into dermal dendrocyte biology may elucidate other histiocytic disorders.