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Dentistry: oral pathology 61-90 (iPod)

QuestionAnswer Mucous membrane pemphigoid: Photomicrograph showing separation of the epithelium from the connective tissue in the basement membrane region. This results in a subepithelial blister. Lichen planus: Striations and erythematous mucosa on the right buccal mucosa. Epidermolysis bullosa. Hands show scarring and contractures. Lichen planus: Large painful ulcer of dorsum of tongue. Lichen planus: White striations on the dorsum of the tongue. Mucous membrane pemphigoid. There is a large ulcer on the buccal mucosa. Irritation fibroma (polypoid fibrous hyperplasia): High power microscopic image showing dense connective tissue with collagen bundles and relatively few blood vessels and fibroblasts. Basal cell carcinoma (slowly growing) of an older patient. The lesion is raised with a central ulcer. The fine vascularity is quite typical. Such tumors feel firm on palpation and are usually asymptomatic. Lichen planus: Striations and erythematous mucosa on the left alveolar ridge and hard palate. Herpes (primary): Multiple ulcers on the lower labial mucosa. Herpes (recurrent): A cluster of intact vesicles on the right vermilion zone and skin. Inflammatory papillary hyperplasia: Erythematous velvety mucosa of the anterior hard palate in the distribution of a temporary partial denture. Aphthous ulcer of the upper labial mucosa. This ulcer is much larger and of longer duration than typical aphthae. Adenocarcinoma of right hard and soft palate. The surgical defect is covered by an obturator that also serves as a partial denture. Mucous retention phenomenon - Ranula (salivary extravasation phenomenon; mucocele): A large compressible bluish soft tissue enlargement of the floor of the mouth. Verruca vulgaris: A tan rough sessile nontender enlargement is present on the palmar skin. Melanoma. Microscopic image showing nests of melanoma cells demonstrating nuclear pleomorphism and hyperchromatism and deposits of melanin pigment. Papilloma. A firm white rough exophytic pedunculated nontender soft tissue enlargement is present on the right ventral tongue. The enlargement is fixed to the surface mucosa but not to underlying structures. Mucous membrane pemphigoid with extensive ulceration of the edentulous alveolar ridge. Tattoo: Medium power microscopic image showing black amalgam particles surrounded by an infiltrate of chronic inflammatory cells. Kaposi's sarcoma: Bilateral erythematous lesions of the retromolar pads. Pleomorphic adenoma (mixed tumor): High power microscopic image showing ducts lined by cuboidal epithelial cells. Note the loose myxoid (containing abundant ground substance) connective tissue. Aphthous ulcer on the nonkeratinized epithelium of the buccal mucosa. Papilloma Hemangioma: Port-wine stain (nevus flammeus) of the lower face and neck. Neuroma. A soft tissue enlargement is present in the mandibular right mental foramen area. The surface of the lesion demonstrates epithelial thickening probably secondary to trauma from a denture. The lesion is tender to palpation. Erythema multiforme: Target lesions on the feet. Mucous membrane pemphigoid. Note the ulcers on the left buccal mucosa. Infectious mononucleosis: This young girl has a rash on her face. Lichen planus. White rough lesions forming a network or striated pattern with an underlying red mucosal base present on the buccal mucosa.
Created by: umichdent
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