A surgical incision or opening made in a blood vessel, typically performed to access the vessel's interior for treatment or examination.
From Greek 'angion' (vessel) + 'tome' (cutting, section). This surgical term has been used since the early development of vascular surgery in the 19th century.
An angiotomy is how surgeons access blood vessels from the inside—they literally open up the vessel to repair it, place a stent, or remove a clot!
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