One of the mysteries of the English language finally explained.
An indentation in the surface of a kidney, spleen, or other organ, where blood vessels, ducts, nerve fibers, etc. enter or leave it.
- ‘The hepatic artery, portal vein, lymphatics, and nerves enter the liver through the hilus.’
- ‘A laparotomy revealed an unresectable tumor encasing the hepatic arteries, portal vein, and common bile duct in the hepatic hilus.’
- ‘It was partially cavitary in the midportion of the specimen and extended into the hilus and renal vein.’
- ‘The arteries enter at the hilus and are carried in, and branch with, the trabeculae.’
- ‘At the center of the concave side, where the ureters and veins issue and arterial vessels and nerves usually enter, is the hilus.’
Mid 19th century: modern Latin, alteration of hilum.
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