Prostate Cancer Recurrence Mimicking a Primary Paranasal Sinus Tumor on 18 F-FDG PET/CT During Treatment for Metastases After 10 Years of Remission.

To our knowledge, there are no detailed case reports confirming uptake in paranasal sinus metastases from prostate cancer using 18 F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT).

The patient was a 68-year-old man who was diagnosed with prostate cancer 16 years prior to his visit.

After a 10-year remission, he received radiation therapy and radium-223 for prostate cancer 6 years earlier, followed by multiple courses of radiation therapy for lymph node and bone metastases over the next 5 years.

His chief complaints were a 2-month history of nasal congestion and a postnasal drip.