melena

• 医学术语，指排出异常黑色、柏油样的大便，其中含有血液，通常由胃肠道出血引起。

A medical term for the passage of abnormally dark, tarry feces that contain blood, typically resulting from gastrointestinal bleeding.

不可数

1. Dark tarry stoolC2formalmedical

   The passage of black, tarry feces, typically resulting from bleeding in the upper gastrointestinal tract.

   黑便

   • The patient was diagnosed with melena after reporting black stools.
   • Melena often indicates a bleeding ulcer in the stomach.
   • Doctors checked for melena to assess the severity of internal bleeding.

   同义词melaena