[Histiocytosis X with partial antehypophyseal deficiencies. 2 cases]

Area of Science:

• Endocrinology
• Oncology
• Pediatrics

Background:

• Histiocytosis X, a rare disorder, frequently presents with endocrine disturbances, most commonly diabetes insipidus.
• Hypothalamic involvement in Histiocytosis X can result in significant endocrine dysfunction, including growth hormone deficiency and short stature in pediatric patients.

Observation:

• This report details two cases of Histiocytosis X with concurrent hypogonadism, growth hormone deficiency, and diabetes insipidus.
• Case 1: A 22-year-old male with low plasma testosterone, responsive to human chorionic gonadotropin. Cutaneous and bone lesions resolved with Vinblastine; partial diabetes insipidus improved with clofibrate.
• Case 2: A 59-year-old female with suppressed pituitary gonadotropins and hyperprolactinemia. Fatal progression involved widespread histiocytic infiltration, particularly in the hypothalamus, without direct anterior pituitary involvement.

Findings:

• The study demonstrates the complex endocrine sequelae of Histiocytosis X, including central hypogonadism and growth hormone deficiency.
• Treatment with Vinblastine showed efficacy in managing cutaneous and bone lesions, while clofibrate offered partial management of diabetes insipidus.
• The second case highlights a fatal outcome due to extensive histiocytic infiltration, emphasizing the potential severity and systemic impact of the disease.

Implications:

• These cases underscore the importance of comprehensive endocrine evaluation and management in patients diagnosed with Histiocytosis X.
• The findings suggest that while certain treatments can manage specific symptoms, the systemic nature of Histiocytosis X poses significant challenges.
• Further research into the pathogenesis and targeted therapies for Histiocytosis X-associated endocrine dysfunction is warranted.