So naturally his blood just accumulates in the veins, which is very unhealthy.

Otherwise, blood would accumulate in either the systemic or pulmonary circulations.

As a result of damage to capillaries, blood and other fluids accumulate in the lung tissue.

Dissection occurs when blood accumulates in the wall of the blood vessel.

When a chest tube becomes occluded or clogged, the blood that should be drained can accumulate around the heart, leading to tamponade.

The blood accumulates in the space between the inner lining of the abdominal wall and the internal abdominal organs.

Sometimes, blood accumulates in the brain, or in the spaces surrounding it.

If enough blood accumulates a visible fluid wave may be seen.

In the conventional operation to correct a varicocele, the surgeon ties off the engorged vein so more blood can't accumulate.

The blood leaking from the heart, having no place to go, was accumulating and compressing the heart so that it could not pump.