Aspergillus infection complicating trassphenoidal yttrium-90 pituitary implant. Report of two cases.

Diagnosis proved difficult in two cases of Aspergillus infection complicating yttrium-90 ablation of the pituitary. This serious complication occurs rarely. Whatever the initial organism obtained from cases with meningitis of late onset, Aspergillus infection should be considered and cerebrospinal fluid should be cultured for fungi.