KEY FACTS Terminology Global or segmental parenchymal splenic ischemia and necrosis caused by vascular occlusion Imaging Acute findings on CECT Diagnosis best made on portal venous-phase images due to heterogeneous arterial-phase enhancement Global infarction: Complete nonenhancement of spleen – ±…
KEY FACTS Terminology Splenomegaly: Splenic enlargement caused by a number of different underlying disorders Hypersplenism: Syndrome consisting of splenomegaly and pancytopenia in which bone marrow is either normal or hyperreactive You’re Reading a Preview Become a Clinical Tree membership for…
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KEY FACTS Terminology Benign ectopic splenic tissue of congenital origin Imaging Most splenules located in or near splenic hilum or ligaments 20% are near or within pancreatic tail and can mimic pancreatic neuroendocrine tumor May also be in diaphragmatic, pararenal,…
Embryology , Anatomy , and Physiology The spleen develops from the dorsal mesogastrium and usually rotates to the left, becoming fixed in the left subphrenic location by peritoneal reflections linking it to the diaphragm, abdominal wall, stomach (gastrosplenic ligament), and…
KEY FACTS Imaging Multiplanar, contrast-enhanced CT (or PET/CT) is optimal imaging test Protocol advice Intravenous contrast for CT or MR Double contrast barium enema Lymphoma Bulky colonic mass; without colonic obstruction Preservation of fat planes Metastasis May mimic primary adenocarcinoma…
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KEY FACTS Terminology Autosomal dominant genetic disorder characterized by formation of innumerable colonic adenomatous polyps at young age and increased risk for colonic and extracolonic tumors Imaging Imaging tests : Double-contrast barium studies of colon and upper GI tract (may…
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KEY FACTS Imaging Imaging is critical for detection, diagnosis, staging, and follow-up of colorectal carcinoma (CRC) Detection : CT colonography, plus stool analysis Complementary role with standard colonoscopy Early cancer: Sessile or pedunculated polyp Advanced cancer: "Saddle" or "apple core"…