Melena in a sentence as a noun

Strong-smelling feces with dark blood are called melena and are associated with bleeding in the upper gastrointestinal tract, peptic ulcers are a common cause. The reason for the difference is the blood gets digested as it passes through the gastrointestinal tract.

Melena definitions

noun

abnormally dark tarry feces containing blood (usually from gastrointestinal bleeding)

See also: melaena