White lesion Flashcards
(267 cards)
White appearing lesions of the mucosal mucosa from the scattering of light through an altered mucosal surface
White Lesion
MUCOSAL ALTERATIONS of White Lesion
Hyperkeratosis- appears white
Hyperplasia of the stratum malpighi (basale)
Intracellular edema of epithelial cells
Reduced vascularity of subjacent CT
Color of exudate and other surface contaminants
Etiology of White Lesion
Physical trauma
Tobacco use
Genetic abnormalities
Mucocutaneous diseases
Inflammatory reactions
SUBCLASSIFIED ACCORDING TO:
Hereditary Conditions
Reactive Lesions
Other mucosal white lesions
Other non epithelial white lesions
Pre-neoplastic & neoplastic lesions
WHITE LESIONS HEREDITARY CONDITIONS
Leukoedema
White Sponge Nevus
Hereditary Benign Intraepithelial Dyskeratosis (HBID)
Follicular Keratosis
Generalized mild opacification of buccal mucosa
Variation of normal
No definitive cause
More prevalent in black population
Shows milder presentation in whites
LEUKOEDEMA
Etiology of Leukoedema
No definitive cause
Implicated factors of Leukoedema
Smoking
Alcohol Ingestion
Bacterial Infection
Salivary Conditions
Electrochemical Interaction
Poor oral hygiene and abnormal masticatory problems
CLINICAL FEATURES OF LEUKOEDEMA
Asymptomatic; Symmetrical
Gray-white, diffuse, filmy or milky, opalescent
Exaggerated cases result in wrinkling or corrugation (scalloped shaped areas) of the mucosa
Gentle stroking with gauze pad or tongue depressor will not remove it
Bilateral on the buccal mucosa
COMMON LOCATION OF LEUKOEDEMA
Bilateral on the buccal mucosa
border of the tongue
How to differentiate leukoedema from other white lesions
With stretching of the buccal mucosa, the opaque changes will dissipate
EPITHELIAL HISTOPATHOLOGY OF LEUKOEDEMA
Epithelium is parakeratotic
Epithelium is acantholytic (Irregular thickening of the epidermis/ epithelial layer)
Marked intracellular edema of spinous cells
Enlarged epithelial cells with small pyknotic nuclei in optically clear cytoplasm
DIFFERENTIAL DIAGNOSIS OF LEUKOEDEMA
Leukoplakia
White Sponge Nevus (Cannon’s Disease)
Hereditary Benign Intraepithelial Dyskeratosis (HBID)
TREATMENT OF LEUKOEDEMA
No treatment is required
PREMALIGNANT BA SI LEUKOEDEMA?
No premalignant tendencies
Clinical appearance commences during adolescence & has equal predilection for males and females
WHITE SPONGE NEVUS (CANNON’S DISEASE)
Rare genodermatosis that is inherited as an autosomal dominant trait - defects in the normal keratinization of the oral mucosa
WHITE SPONGE NEVUS (CANNON’S DISEASE)
Mistaken for leukoplakia
WHITE SPONGE NEVUS
CLINICAL FEATURES OF WHITE SPONGE NEVUS
Typical appearance: white lesion which is elevated and look irregular, have fissures and plaque formation
Painless
Deeply folder, white or gray lesions affecting the mucosa
Bilateral and symmetrical
Appears early in life (adolescence)
Keratosis in the buccal mucosa
Thicker than leukoedema
OTHER NAME FOR WHITE SPONGE NEVUS
CANNON’S DISEASE
HISTOPATHOLOGY OF CANNON’S DISEASE
Spongiosis
Acanthosis
Parakeratosis
Pronounced intracellular edema: edematous (fluid accumulation)
Mode of keratinization is characterized by the retention of the nuclei in the stratum corneum
DIFFERENTIAL DIAGNOSIS OF CANNON’S DISEASE
Hereditary Benign Intraepithelial Dyskeratosis (HBID)
Pachyonychia Congenita
Lichen Planus (Hypertrophy type)
Cheek biting or traumatic/ frictional keratosis
Affecting the nails and skin
Blisters in soles on their feet (painful) and palms
White patches on tongue and buccal mucosa
Pachyonychia Congenita
TREATMENT FOR CANNON’S DISEASE
No treatment - self limiting