Myocardial metastasis within lipomatous hypertrophy of the interatrial septum.

A 74-year-old lady with lipomatous hypertrophy of the interatrial septum presented with symptomatic anemia. Imaging revealed a new diagnosis of metastatic cancer of presumed lung origin, with a new soft tissue myocardial lesion adjacent to the right atrium within the region of lipomatous hypertrophy. This was favored to represent a myocardial metastasis within concurrent lipomatous hypertrophy of the interatrial septum.

Incidental Intrahepatic Hepatocellular Cholangiocarcinoma Detected on 68Ga-PSMA PET/CT.

A 69-year-old man with intermediate-risk prostate cancer and a mildly elevated prostate-specific antigen of 8.2 μg/L was referred for 68Ga-prostate-specific membrane antigen (68Ga-PSMA) PET/CT for primary staging. An incidental intensely 68Ga-PSMA-avid hepatic focus was seen on PSMA PET and subsequent FDG PET/CT and MRI cholangiogram.

FDG avid pulmonary amyloid nodule in a patient with metastatic renal cell cancer on 18F-FDG PET/CT.

A 60-year-old man with a background of resected clear cell renal cancer and resected colorectal adenocarcinoma presented with a pulmonary mass lesion in the left upper lobe which was avid on 18-F FDG PET/CT. Needle biopsy confirmed metastatic renal cell cancer, which was surgically excised with wedge resection. Follow-up imaging 6 months later demonstrated a second slowly enlarging subcentimeter nodule in the contralateral lung with increasing FDG avidity, suspicious of further small volume oligometastatic disease.

Synchronous Recurrence of Metachronous Lung Cancer and Hodgkin Lymphoma Within an Axillary Lymph Node Isolated on 18F-FDG PET/CT.

An 82-year-old man with a background of non-Hodgkin lymphoma in remission, resected left lower lobe adenocarcinoma (stage IA), and resected cutaneous melanoma of the left forearm more than 5 years prior presented with cerebral metastatic disease. Excision biopsy confirmed adenocarcinoma of lung origin. Further evaluation with 18F-FDG PET/CT demonstrated FDG-avid disease in the right thorax, axilla, and lower neck and isolated cutaneous uptake in the right forearm.

Incidental prostate-specific membrane antigen-avid meningioma detected on Ga-prostate-specific membrane antigen PET/CT.

A 70-year-old gentleman with a history of Gleason score 7 (3 + 4) prostate adenocarcinoma was treated with radical prostatectomy with clear surgical margins. Postoperatively his prostate specific antigen was undetectable. However, his prostate specific antigen was slowly rising and he was referred for a Galium-Prostate Specific Membrane Antigen (PSMA) PET/CT scan.