Physiological 68Ga-PSMA-11 Uptake in Dural Venous Sinuses.

We describe hitherto unreported physiological low-grade 68Ga-PSMA-11 uptake in dural sinuses of patients who underwent 68Ga-PSMA-11 PET/CT for evaluation of prostate carcinoma. A strong positive correlation was found between SUVmax of tracer uptake in dural sinuses and SUVmax of blood pool activity in superior vena cava. Low-grade 68Ga-PSMA-11 uptake seen in dural sinuses is physiological and is most likely result of venous blood pool activity.

Penile Metastasis from Renal Cell Carcinoma: Diagnosis and Posttreatment Response Seen on Fluorodeoxyglucose Positron Emission Tomography-Computed Tomography.

We present fluorodeoxyglucose positron emission tomography-computed tomography (FDG PET-CT) findings in an extremely rare case of penile metastasis from renal cell carcinoma. A 66-year-old male, a known case of renal cell carcinoma, underwent FDG PET-CT. The scan showed metabolically active cervical lymph nodes, lytic skeletal lesions, deposit in the left adrenal gland, and nodules in the bilateral lungs, indicating metastatic disease.

68Ga-Prostate-Specific Membrane Antigen PET/CT Findings in Extra-axial Metastasis From Prostate Carcinoma.

A 67-year-old man with no previous history of malignancy presented with trigeminal neuralgia. MRI of the brain revealed extra-axial lesion along right trigeminal nerve suggestive of neuroma. On histopathology, the lesion was found to be metastasis from adenocarcinoma prostate.