Ophthalmology The diagnostic triad of exophthalmos, diabetes insipidus and bone lesions is characteristic of: A Hand-Schuller Christian disease B Letterer-Sieve disease C Fibrous dysplasia D Osteoporosis 💡 Explanation The diagnostic triad of exophthalmos, diabetes insipidus and bone lesions is characteristic of: ✓ Correct Answer: A. Hand-Schuller Christian disease