also: メレーナ
noun
melena; melaena
Medical term for black, tarry stool containing partially digested blood, indicating upper gastrointestinal bleeding.
メレナは上部消化管出血の兆候です。
Melena is a sign of upper gastrointestinal bleeding.
患者はメレナを訴えて来院した。
The patient came to the hospital complaining of melena.