Invasive granulomatous cryptococcal sinusitis in an adult with multiple myeloma.

We report a case of cryptococcal sinusitis, a rare presentation of Cryptococcus neoformans infection in a patient with multiple myeloma. The objective of this case report is to highlight the utility of structural and functional imaging modalities in the differential diagnosis of sinonasal soft tissue masses in the immunocompromised patient population. PET-CT was the first imaging modality in this patient, who presented for routine follow-up staging of multiple myeloma, and was asymptomatic at the time of his presentation.