false lumen
Medical term used in the context of aortic dissection; refers to the channel formed within the aortic wall when blood enters through a tear in the intima.
In aortic dissection, blood flows in through a tear in the intima, forming a false lumen.
Compound of 解離 (dissociation, separation) and 腔 (cavity, lumen). The exact historical derivation is uncertain; the term is a modern medical coinage.