An instance of indurated ulcer of the tongue due to Oidium lactis is reported by Wilkins and Bayne-Jones.103 It appears to be a rare condition. The patient was an emaciated infant, aged 6 months. The ulcer was situated in the midline far back on the dorsum of the tongue, about 8 or 10 mm. in diameter, covered with a dirty grayish fur and was much indurated. Microscopic examination of stained sections of tissue removed from the edge of the ulcer revealed mycelial filaments. The organism obtained by culture was classified as Oidium lactis, Link, 1809; it is included in the genus Oidium, as amended by Pinoy to contain human parasites. It was obtained also in cultures from the stools, which had been diarrheal. It was agglutinated by the patient's serum and not by normal serum. The ulcer yielded readily to cauterizing with silver nitrate, and the fungus
HOLMES JB. RECENT WORK IN ANATOMY, PHYSIOLOGY AND PATHOLOGY OF INFANCY AND CHILDHOOD. Am J Dis Child. 1925;30(1):87–106. doi:10.1001/archpedi.1925.01920130093015
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