だい動脈 どうみゃく解離 かいりじゃありませんでした
daidōmyakukairijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 大動脈解離

1. Was not a dissection of the aorta.; Was not an aortic dissection.

Past/Perfective
Negative
Polite
Terminal Form
Medicine