has part has part characteristic of inheres in has modifier Abnormality of the orbital region Orbital cyst Cyst of eye socket Presence of a cyst in the region of the periorbital tissues. Orbital cysts can be derived from epithelial or glandular tissue within or surrounding the orbit (lacrimal glands, salivary glands, conjunctival, oral, nasal, or sinus epithelium). HP:0001144 Orbital cysts UMLS:C0155285 SNOMEDCT_US:31021007 abnormal cystic periorbital region