開頭 かいとう手術 しゅじゅつではありませんでした
kaitōshujutsudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 開頭手術

1. Was not a starting surgery.; Was not the initial operation.

Past/Perfective
Negative
Polite
Formal Register
Surgery