What causes black, tarry stools (melena) and bleeding in patients with liver cirrhosis?

May 28, 2022 Source: Cainiu Health
Disease description:

I have an older brother who was diagnosed with cirrhosis. Over the past few days, he reported passing black, tarry stools (melena) accompanied by bleeding. I’m quite concerned—what does it mean when a patient with cirrhosis experiences black, tarry stools and bleeding?

Doctor's answer (1)
Dr. Shen Yonghua
The cause of black tarry stools (melena) and bleeding in patients with cirrhosis is often portal hypertension, which can lead to rupture of esophageal or gastric varices, resulting in gastrointestinal bleeding and subsequently presenting as melena. In addition, patients may experience associated symptoms such as dizziness, fatigue, and abdominal discomfort. Prompt medical evaluation at a hospital is strongly recommended.