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Surgical Anatomy—Wounds—Dental ulcer—Inflammatory affections:Acute parenchymatous glossitis and hemi-glossitis;Mercurial glossitis;Chronic superficial glossitis;Leucoplakia;Smoker's patch—Tuberculous disease;Syphilitic affections;Sclerosing glossitis;Gummas;Ulcers and fissures—Tumours:Carcinoma;Sarcoma;Innocent tumours;Cysts—Thyreo-glossal tumours and cysts—Malformations:Absence;bifid tongue;Tongue-tie;Excessive length of frenum;Macroglossia;Atrophy—Nervous affections.

The most important, as it is frequently followed by the development of epithelioma, is that known as leucoplakia or leucokeratosis.

Leucoplakia of the Tongue 531 258.

It may eventually assume the characters of leucoplakia.

Papillomatous thickening of the mucous membrane sometimes occurs in association with leucoplakia.