In a previous communication1 the discovery of a fungus, Mucor-Histoides, in pus recovered by irrigation from the maxillary sinuses of a patient was reported. The clinical picture in this infection was one of long-standing chronic sinusitis associated with chronic inflammatory changes in the membranes of the nasal chamber. One breast had been removed by a radical operation and showed on microscopic examination chronic mastitis. This fungus was found repeatedly over a period of months. It resembled cells of the human body so closely in its morphologic characteristics that its differentiation was difficult.
It might be well to outline briefly the forms of this fungus as seen in the microscope. The spores were of two kinds; one was plain and the other had lobulated chromatin which closely resembled the nucleus of a polymorphonuclear leukocyte. Yeastlike buds were at times present on the spores, but they also divided by direct fission
STEVENSON HN. MYCOTIC INFECTIONS OF THE MAXILLARY SINUSES. Arch Otolaryngol. 1934;20(3):340–350. doi:10.1001/archotol.1934.03600030045003
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