Abstract: The study of 18 cases of Visceral Mycosis complicated in prolonged ad-minstration of broad-spectrum antibiotics is reported. The involved organs Were mainly lungs (15) and digestive tracts (11). The pathological changes were mainly injured the blood vessels, causes hemorrhage, necrosis, inter-stitial inflammation, abscess and granuloma of the involved organs.8 cases died directly by mycotic infections, 5 of these was disseminated mycosis, 2 was hemorrhagic pneumonia and 1 was hemorrhagic enteritis.

Key words: mycosis, clinicopathologic