| Question |
Answer |
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Pemphigus. Medium power photomicrograph of direct immunofluorescence preparation. There is staining for antibodies in the intercellular spaces of the stratified squamous epithelium. |
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Herpes (primary): Multiple ulcers on the labial mucosa commissures and gingiva. |
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Epidermolysis bullosa. The hands demonstrate ruptured bullae severe scarring and loss of nails. |
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Tattoo: A thickened nontender black surface lesion on the left buccal mucosa. A tattoo can sometimes be thickened due to fibrosis. |
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Lupus erythematosus skin: Scaly hyperkeratotic lesion on nose. |
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Herpes zoster: Vesicles crusted ulcers and erythema of the upper lip extending to the midline. |
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Mucous membrane pemphigoid. Note the ginvial erythema and ulceration. |
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Erythema multiforme: Vesicles on the lips. |
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Herpes zoster: Ulcers and erythema in a unilateral distribution on the hard palate. These lesions represent maxillary involvement of the trigeminal nerve. |
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Mucous retention phenomenon (salivary extravasation). Low-power photomicrograph showing a lobule of normal salivary gland tissue adjacent to a circumscribed pool of mucus. Hematoxylin and eosin stain. |
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Epulis fissuratum. A lobulated soft tissue enlargement is present in the maxillary left mucolabial fold. The flange of the denture would fit between the rolls of tissue. |
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Papilloma. Medium power photomicrograph showing acanthosis and hyperkeratosis with underlying loose connective tissue. Hematoxylin and eosin stain. |
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Varicella (chickenpox). An erythematous papule on the skin. |
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Familial epithelial hyperplasia (white sponge nevus): Diffuse white epithelial thickening of the left buccal mucosa. |
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Candidosis. Note white plaques which will rub off on the left buccal mucosa. |
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Aphthous ulcer. Note the ulcer on the nonkeratinized epithelium of the buccal mucosa. |
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Dermoid or epidermoid cyst. A large compressible well-circumscribed soft tissue enlargement is present in the floor of the mouth. It is elevating the tongue. |
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Lichen planus: Microscopic image showing hyperkeratosis elongation of the rete ridges and a dense infiltrate of lymphocytes underneath the epithelium. |
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Lichen planus: White striae of right buccal muocsa. |
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Mucous retention phenomenon; mucocele - Salivary extravasation phenomenon: A well circumscribed blue compressible enlargement of the commissure area. The lesion does not blanch upon pressure. |
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Mucous membrane pemphigoid demonstrating gingival erythema. |
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Squamous cell carcinoma (superficially invasive): A nontender erythematous pebbly plaque is present on the left soft palate and tonsillar pillar area. |
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Fordyce granules: Note the yellow plaques with a smooth surface. Fordyce granules represent sebaceous glands and are not pathologic. |
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Hemangioma: Purple compressible lesion of the left soft palate. The lesion blanches upon pressure. |
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Lymphoma. An erythematous firm soft tissue enlargement partially covering the external auditory canal. |
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Gingival cyst: A circumscribed soft tissue enlargement on the gingiva. |
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Adenoid cystic carcinoma. In this view we can appreciate the ductal spaces with their pink product contrasting with the paler material in the others. |
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Irritation fibroma (polypoid fibrous hyperplasia): Microscopic image showing dense connective tissue and a surface of keratinized stratified squamous epithelium. |
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Lichen planus: Erythema and white epithelial thickening of right lateral border of tongue. |
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Squamous cell carcinoma (superficially invasive): An asymptomatic red patch with white rough areas is present on the left soft palate. |
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