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Basic anatomy of the deep veins of the arm http://www.ultrasoundpaedia.com/normal-dvt-arm/

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Acute cholecystitis refers to the acute inflammation of the gallbladder. It is the primary complication of cholelithiasis and the most common cause of acute pain in the right upper quadrant (RUQ). Ultrasound (US) is the preferred initial modality in the investigation of right upper quadrant pain. http://radiopaedia.org/articles/acute-cholecystitis

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