Langerhans cell histiocytosis - a case report

Area of Science:

• Dermatology
• Endocrinology
• Pediatric Oncology

Background:

• Langerhans cell histiocytosis (LCH) is a rare clonal proliferative disorder of Langerhans cells.
• It can affect multiple organ systems, including the skin and endocrine glands, particularly in adolescents.

Observation:

• A 17-year-old male presented with chronic scalp papules and perineal ulcers.
• He also exhibited symptoms of polyuria, polydipsia, delayed puberty, and hearing loss.
• Histopathology revealed characteristic mononuclear cells with eosinophilic cytoplasm, kidney-bean shaped nuclei, and numerous eosinophils.

Findings:

• Immunohistochemistry confirmed LCH with positive CD1a and S100 protein staining.
• Endocrine work-up identified diabetes insipidus, hypogonadotropic hypogonadism, hyperprolactinemia, growth hormone deficiency, and pituitary stalk thickening.
• Initial treatment with prednisone and vinblastine achieved remission, with topical therapy managing scalp recurrence.

Implications:

• This case highlights the importance of recognizing the diverse clinical presentations of LCH, including cutaneous and endocrine manifestations.
• Integrated dermatologic and endocrine management is crucial for successful treatment outcomes in adolescent LCH patients.
• Hormonal replacement therapy effectively addressed the endocrine sequelae post-chemotherapy, ensuring long-term patient well-being.