Confidence votes 11. According to Wikipedia, the width of the Atlantic Ocean at its narrowest point is 2,848 kilometers (1,770 mi) between Brazil and Sierra Leone.
Paroxysmal nocturnal hemoglobinuria or PNH is a rare and chronic disease that results in an abnormal breakdown of red blood cells. PNH is due to a spontaneous genetic mutation that causes red blood cells to be deficient in a protein, leaving them fragile.
Cause. 1  Thrombosis of the superior vena cava caused by an indwelling central venous catheter which caused superior vena cava syndrome. 2  A CXR of a person with lung cancer which was causing superior vena cava syndrome. 3  A CT image showing compression of the right hilar structures by cancer.