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  • Title: [Tuberculosis: a rare and misleading etiology of tongue's ulcer].
    Author: Hofman V, Selva E, Musso S, Odin JC, Dellamonica P, Hofman P.
    Journal: Ann Pathol; 2003 Jun; 23(3):261-5. PubMed ID: 12909832.
    Abstract:
    We report the case of a 43 year-old man, smoker, who used to live in Africa, consulting for a chronic ulcer of the mobile tongue. An initial biopsy did not show any carcinoma. A second biopsy highlighted an inflammation with numerous tuberculoid granulomas. However, the Ziehl-Neelsen stain was negative. Histoplasmosis of the tongue was then suspected as some round structures looking like yeasts and stained by the Gomori Grocott method were seen within the cytoplasm of giant cells. However, immunohistochemistry using anti-Histoplasma antibodies was negative. Polymerase chain reaction (PCR) assay performed on deparaffinized sections allowed the diagnosis of infection by Mycobacterium tuberculosis. A third biopsy confirmed the diagnosis of tuberculosis by showing some exceptional acid-fast bacilli. Culture was negative. Tuberculosis of the tongue is a very rare condition with different differential diagnosis including carcinoma in smoker population or histoplasmosis in endemic area.
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