The ductus arteriosus is a normal fetal artery connecting the main body artery (aorta) and the main lung artery (pulmonary artery). The ductus allows blood to detour away from the lungs before birth. Every baby is born with a ductus arteriosus. After birth, the opening is no longer needed and it usually narrows and closes within the first few days.
Welcome to our Guide for men who have noticed blood in their urine. The medical term for blood in the urine is hematuria. Urine that contains blood can appear pink, red, maroon, or even have a dark smoky color that looks like cola. You may or may not see blood clots, which can look like coffee grounds. Rarely, red urine may be caused by certain foods or medicine.
No amount of blood in your urine is normal but that doesn't mean that it is caused by something dangerous. Hematuria can be microscopic (not seen except by laboratory studies) or macroscopic (can be seen by the naked eye). The most common reason for blood in the urine is a urinary tract infection or an enlarged prostate. The most worrisome reason for having blood in the urine is cancer of the bladder or kidney. Having smoked in the past, exposure to industrial chemicals, and advanced age can be risk factors for having cancer.