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Congenital self-healing langerhans cell histiocytosis: clinical and pathological characteristics
Yu Pan1, Xianfeng Zeng2, Juan Ge1
1Department of Pathology, Southern Medical University Affiliated Maternal and Child Health Hospital of Foshan Foshan 528000, Guangdong, P. R. China.
Insights
Congenital Self-Healing Langerhans Cell Histiocytosis (CSHLCH) presents with skin lesions at birth that typically resolve on their own. Diagnosis requires observing spontaneous resolution of these cutaneous lesions without systemic involvement.
Area of Science:
- Dermatology
- Pediatric Pathology
- Histiocytosis
Background:
- Congenital Self-Healing Langerhans Cell Histiocytosis (CSHLCH) is a rare condition.
- Characterized by skin lesions present at birth or in the neonatal period.
- Distinguished by the absence of systemic lesions.
Purpose of the Study:
- To describe the clinical and histological features of CSHLCH.
- To emphasize the diagnostic criteria for CSHLCH.
- To highlight the importance of spontaneous resolution and lack of systemic involvement.
Main Methods:
- Recruitment of seven CSHLCH cases.
- Histological examination of skin biopsies using hematoxylin-eosin staining.
- Immunohistochemical analysis of lesional cells for CD1a and S-100.
Main Results:
- Lesions were solitary (71.4%) or multiple (28.6%).
- Histology revealed dermal infiltrate of CD1a and S-100 positive histiocytes with eosinophils.
- All cases showed spontaneous regression of cutaneous lesions without systemic involvement or recurrence.
Conclusions:
- CSHLCH lesions demonstrate a propensity for spontaneous regression.
- Spontaneous resolution of cutaneous lesions and absence of systemic disease are key diagnostic indicators.
- Long-term follow-up is recommended for CSHLCH patients.
Introduction:
Congenital Self-Healing Langerhans Cell Histiocytosis (CSHLCH) is rare, characterized by cutaneous lesions at birth or in the neonatal period, and absence of systemic lesions.
Materials And Methods:
Skin biopsy was performed and the histologic examination of the skin section, routinely stained with hematoxylin-eosin. Paraffin sections were stained by immunohistochemical study which were carried out according to the manufacturer's protocols.
Result:
Seven cases of CSHLCH were recruited. 28.6% (2/7) of the cutaneous lesions were multiple, 71.4% (5/7) were solitary. Skin biopsy was performed and the histologic examination of the skin section, routinely stained with hematoxylin-eosin. Microscopically, in the dermis, a dense infiltrate of histiocytic cells mixed with numerous eosinophils. These histiocytes were immunohistochemically positive for CD1a and S-100. All of the cutaneous lesions regress spontaneously, and lack of systemic involvement, the final diagnosis of Congenital Self-Healing Langerhans Cell Histiocytosis were made. No recurrence had been observed.
Conclusion:
The cutaneous lesions of CSHLCH may regress spontaneously. Spontaneous resolution of cutaneous lesions and lack of systemic involvement are essential for the diagnosis of CSHLCH. It needs long-term follow-up.
