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The hypointense liver lesion on T2-weighted MR images and what it means
Curvo-Semedo, L; Brito, JB; Seco, MF; Costa, JM; Marques, CB; Caseiro-Alves, FThe vast majority of focal liver lesions are hyperintense on T2-weighted magnetic resonance (MR) images. Rarely, however, hepatic nodules may appear totally or partially hypointense on those images. Causes for this uncommon appearance include deposition of iron, calcium, or copper and are related to the presence of blood degradation products, macromolecules, coagulative necrosis, and other conditions. Although ...
Gastroenterologic and Radiologic Approach to Obscure Gastrointestinal Bleeding:...
Graça, B; Freire, PA; Brito, JB; Ilharco, J; Carvalheiro, VM; Caseiro-Alves, FGastrointestinal (GI) bleeding is a common clinical condition that is increasingly seen in an aging population and frequently requires hospitalization and intervention, with significant morbidity and mortality. Obscure GI bleeding (OGIB) is defined as loss of blood with no source identified after upper endoscopy and colonoscopy. Whether an obscure site of bleeding is clinically evident or silent, it constitutes...
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