Pathology A triad of features consisting of multifocal bony defects,diabetes insipidus and exophthalmous is termed as: A Hand-schulles-christian disease. B Letterer-siwe disease. C Hypersplenism. D Burkitt’s lymphoma. 💡 Explanation A triad of features consisting of multifocal bony defects,diabetes insipidus and exophthalmous is termed as: ✓ Correct Answer: A. Hand-schulles-christian disease.