Rosai-Dorfman disease (RDD) is a rare condition that causes massive lymphadenopathy, most commonly in the cervical area. Cowden syndrome (CS) hamartomas skin and mucosa predisposes individuals to various malignancies. Lhermitte-Duclos (LDD), or dysplastic cerebellar gangliocytoma, often associated with CS. A 41-year-old female all three conditions presented abnormal uterine bleeding endometrial...