This five-part review focuses on selected nonneoplastic diseases of th
e aorta and pulmonary trunk. Because many more diseases affect the aor
ta compared with thr pulmonary trunk and the right and left main pulmo
nary arteries, most of this review will be devoted to disorders of the
aorta. Part V of this five-part series on diseases of the aorta and t
he pulmonary trunk focuses on nonneoplastic diseases of the pulmonary
trunk and the right and left main pulmonary arteries.