Rare Paravertebral and Skull Base Metastases in Prostate Cancer

68Ga-Prostate-Specific Membrane Antigen Solitary Base of Skull Prostate Adenocarcinoma Metastasis

A 74-year-old man with prostate adenocarcinoma (Gleason 7) was referred for Ga-prostate-specific membrane antigen (PSMA-HBED-CC) PET/CT scan for staging. Findings confirmed the prostate malignancy and demonstrated a solitary metastasis in the left skull base, with no evidence of regional or distant metastasis elsewhere. Solitary base of the skull metastasis may be subtle and easily overlooked, highlighting the need for thorough evaluation of the region.

Non-Hodgkin Lymphoma With an Atypical Presentation: A Solitary Paravertebral Mass on FDG PET/CT

An 81-year-old woman was admitted with chest tightness and shortness of breath. Chest CT revealed massive pleural effusion on the right side as well as a right paravertebral soft tissue mass at the T8 to T10 level, showing intense enhancement. Her symptoms were successfully relieved by thoracentesis catheter drainage. On PET/CT, the paravertebral lesion demonstrated increased FDG uptake with an SUVmax of 7.5, indicating a suspected diagnosis of malignancy. Eventually, a CT-guided needle biopsy was performed, which confirmed the diagnosis of non-Hodgkin lymphoma.