“…A number of cases have followed the use of contaminated dressings (Gartenberg et al, 1978;Bottone et al, 1979;Dennis et al, 1980), and may be associated with the sites of injection (Symmers, 1968), needle biopsy (Gartenberg et al, 1978;Dennis et al, 1980) or cannula insertion (Fisher et al, 1980). A few cases of the rhinocerebral form appear to have been precipitated by dental extraction (Eilderton, 1974;Ristow et al, 1979), though it is difficult to be sure that facial pain caused by pre-existing zygomycosis was not misinterpreted.…”