The male pelvis on 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) is more straightforward than the female pelvis. The testes may demonstrate physiologic FDG avidity. FDG-avid foci within the prostate may represent benign focal prostatitis or prostate cancer. Testes You’re…
The female pelvis can be difficult to evaluate on 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT). The endometrium and ovaries may demonstrate physiologic FDG avidity. Benign leiomyomata of the myometrium may be FDG avid. In addition, physiologic FDG avidity in…
The urinary tract is one the most difficult organ systems of the body to evaluate on F18-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT). This is because of physiologic excretion of FDG through the kidneys, ureters, and bladder. FDG in urine…
The peritoneum is a membranous lining of the abdominal cavity and organs. The parietal peritoneum lines the abdominal cavity, whereas the visceral peritoneum lines the intraperitoneal organs. Between layers of the peritoneum is the peritoneal cavity, a potential space. This…
The gastrointestinal (GI) tract poses challenges for interpretation on 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT). The esophagus, stomach, and small and large bowel may all demonstrate physiologic FDG avidity, and physiologic FDG avidity may be even more intense than…
The differential diagnosis for adrenal lesions includes malignant neoplasms, benign neoplasms, and benign nonneoplastic processes. The most common adrenal malignancies by far are metastases. Additional adrenal malignancies include lymphoma, malignant pheochromocytomas, and adrenal cortical carcinomas. The most common benign adrenal…
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…
You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here