Oral Lymphoepithelial Cyst
A benign, superficial cyst arising from entrapped epithelium within lymphoid tissue, most commonly found on the floor of the mouth or soft palate.
Full Definition
An oral lymphoepithelial cyst is a soft, yellowish, well-circumscribed developmental cyst that forms when oral epithelium becomes trapped within lymphoid aggregates in the oral submucosa. It is benign and typically asymptomatic, discovered incidentally during routine oral examination. It most frequently occurs on the floor of the mouth, the posterior lateral tongue, or the soft palate. Editors must distinguish this entity from mucoceles and ranulas, which arise from salivary gland tissue rather than lymphoid tissue. The preferred spelling in British clinical literature is 'lymphoepithelial' (hyphenated forms are non-standard).
Usage
Usage note: Do not hyphenate 'lymphoepithelial'; the solid compound form is standard in oral medicine literature.
In Context
- "The oral lymphoepithelial cyst presented as a soft, yellowish nodule on the floor of the mouth and required no treatment beyond reassurance." — Clinical case report
- "When editing the differential diagnosis section, the author incorrectly listed oral lymphoepithelial cyst under salivary gland lesions; it should appear under developmental cysts." — Peer-review editorial note