This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Triad of exophthalmos, bone lesions, and diabetes insipidus is a feature of 
Select and explain. 
A. Hand-schuller christian disease, B. Craniofacial dysostosis, C. Mickulicz syndrome, D. Letterer - sieve disease
A: Hand-schuller christian disease
Answer: A: Hand-schuller christian disease 
Explanation: HSCD is associated with multifocal langerhans cell histiocytosis.
Triad:

Exophthalmos
Lytic bone lesions
Diabetes insipidus.