Fusarium verticillioides abscess of the nasal septum in an immunosuppressed child: case report and identification of the morphologically atypical fungal strain.

Morphologically atypical Fusarium verticillioides causing a nasal abscess in a severely immunosuppressed child was successfully treated with repeated surgical intervention and liposomal amphotericin B, despite amphotericin B resistance in vitro. Definitive identification was achieved by sequencing the translation elongation factor alpha gene after ribosomal sequencing proved inadequate.