Gastrointestinal Tract

LEUKOPLAKIA

This is highly variable and can range from A, smooth and thin with well-demarcated borders. B, diffuse and thick. C, irregular with a granular surface. D, diffuse and corrugated.

ERYTHROPLAKIA

A, Lesion of the maxillary gingiva. B, Red lesion of the mandibular alveolar ridge. Biopsy of both lesions revealed severe dysplasia amounting to CIS

SQUAMOUS CELL CARCINOMA LATERAL BORDER OF TONGUE

Leukoplakia-like
ulcerative
Fungating
Erythroplakia-like


A squamous cell carcinoma presenting as a verroucous keratotic lesion of the marginal gingiva, in a 54 year old male patient.
D
Squamous cell carcinoma of the lower gingiva. Presenting as a deeply ulcerative lesion, in a 65 year old female patient.


Floor of Mouth Squamous Cell Carcinoma

Indurated, slowly growing lesion of the lower lip.

SCC Lip

Well-differentiated SCC

Sheets of well-differentiated SCC showing keratin nests.

Round cells without obvious squamous differentiation

Poorly-differentiated SCC