The differential for focal pancreatic lesions depends on whether the lesion is solid or cystic. Solid pancreatic lesions include primary pancreatic adenocarcinoma, pancreatic neuroendocrine tumors (PNETs), lymphoma, and metastases. Cystic pancreatic lesions include true cysts, pseudocysts, and cystic neoplasms. Focal…
When confronted with a focal splenic lesion, knowledge of the differential diagnosis for splenic masses is valuable ( Fig. 13.1 ). For malignancies of the spleen, lymphoma would be most common, whereas metastases are relatively uncommon and primary splenic malignancies…
Liver The segmental anatomy of the liver is based on the hepatic veins, thus the segmental anatomy of the liver is more difficult to appreciate on contrast computed tomography (CT). The liver is divided into right and left lobes by…
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The pleura are the pair of membranous linings surrounding the lungs. The visceral pleura covers each lung surface, and the parietal pleura covers the inner surface of the thoracic cavity. Normally, the visceral and parietal pleura oppose each other, have…
The lung is an organ where the integration of findings on 18F-fluorodeoxyglucose positron emission tomography (FDG PET), findings on computed tomography (CT), and the clinical scenario is particularly important to arrive at the best conclusions. Many FDG-avid lung lesions will…
Head and Neck Anatomy The head and neck has complex anatomy. Proper identification of benign and malignant lesions depends on an understanding of this anatomy and how it may be altered by surgery, chemotherapy, and radiation. The suprahyoid neck is…
Normal Brain 18F-Fluorodeoxyglucose (FDG) was initially designed to be a brain metabolism tracer and today has multiple applications in neurologic disorders, such as dementias and seizures. The demonstration of the value of FDG in metabolically active tumors has led to…
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