[Laryngeal histoplasmosis due to "Histoplasma duboisii" (author's transl)].

Primitive detection of the Histoplasma duboisii accompanied with proteiform manifestations, is rare in the superior air ways. Its localisation at the larynx level is an exception and makes the very interest of our following reported observation. In front of this hard diagnostic, only the pathogenic agent visualisation gives evidence. Among serological techniques, immuno-fluorescence and E.L.I.S.A. are very helpful. Therapeutic possibilities have been improved by Miconazole which both associates efficiency and inocuity.