Leukoedema
Pronunciation: loo-koh-eh-DEE-mah
A benign, diffuse, greyish-white opalescent appearance of the buccal mucosa caused by intercellular oedema of the epithelium, considered a normal anatomical variation in many populations.
Full Definition
Leukoedema presents as a bilateral, diffuse, filmy or opalescent whitening of the buccal mucosa that characteristically disappears or markedly diminishes when the mucosa is stretched. This feature—loss of whitening on stretching—is the key clinical diagnostic test that differentiates leukoedema from white pathological lesions. It is more prevalent and more marked in individuals of African and Asian heritage, though it occurs across all ethnic groups. Histologically it shows intracellular oedema of the prickle cell layer without dysplasia. Editors should ensure the term is spelled as one word, 'leukoedema', not hyphenated or split.
Usage
Usage note: Spell as one unhyphenated word: 'leukoedema'. The disappearance of whitening on mucosal stretching is the defining clinical sign and should be mentioned in any description of this entity.
In Context
- "The bilateral buccal opalescence disappeared on stretching, confirming a diagnosis of leukoedema rather than leukoplakia." — Clinical examination note
- "Copy-editors should note the single-word spelling 'leukoedema'—no hyphen—as used throughout current oral medicine literature." — Style guide note