Transcript
Macule
Papule
Nodule
Vesicle
Intraepithelial vesicle
Subepithelial vesicle
Ulcer
Petechia
Echymosis
Variable degrees of dysplasia & severe dysplasia (carcinoma in situ) of squamous epithelium
In the severe dysplasia (CA in situ) there is full cytological features of malignancy but still the basement
membrane is intact, i.e. there is no invasion
Actinomycosis. Cervicofacial actinomycosis.
Actinomycosis colony (sulfur granule) surrounded by pus.
Primary syphilis (chancre).
Secondary syphilis. Cutaneous macular lesions.
Tertiary syphilis. Palatal fistula resulting from a gumma.
Tuberculosis of the palate.
Tuberculosis of the maxillary alveolar ridge.
Diagram of typical TB granuloma
Caseation
Epithelioid cells
Multinucleated GC
Lymphocytes
fibroblasts
Single hilar granuloma : lung
Granulomas: low power view
Granuloma : low power view
Outer: inflamm. Cells Histiocytes & Giant cells Necrosis :Center
Granuloma
Langhans giant cell
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