自然 しぜん気胸 ききょうではありませんでした
shizen kikyōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 自然気胸

1. Was not a pneumothorax.; Was not spontaneous pneumothorax.

Past/Perfective
Negative
Polite
Formal Register
Medicine