What is the cause of black granular blood in stool

Stool black granular with blood may be related to peptic ulcer, systemic lupus erythematosus, rectal cancer and other factors.

1, peptic ulcer

such as gastric ulcer, duodenal ulcer, serious illness, ulcer site will bleed, iron ions in the blood can be converted into iron sulfide, resulting in stool black with blood. And these two diseases can also lead to gastrointestinal dysfunction, stool in the intestine for a long time, causing stool black granular.

2, systemic lupus

erythematosus can also lead to patients with thrombocytopenia, prone to bleeding phenomenon, resulting in stool black with blood. And the disease can also involve the digestive system, resulting in slow intestinal motility, so that stool was granular.

3, rectal cancer

with the increase in the size of the lesion, can affect the normal discharge of stool, so that stool in the intestine for a long time, which water is absorbed by the intestine, resulting in stool was black granular. And rectal cancer lesions are more fragile, stool often lead to bleeding, causing stool black with blood.