Can a 4.2 cm descending aortic aneurysm cause chest tightness/pressure? all of my heart tests have come back clear.

aneurysm: Usually an aneurysm that size is without symptoms. Discuss your symptoms with your dr.

not likely: This is a moderate sized thoracic aneurysm which is not likely to cause symptoms unless expanding. It is possible, though, to cause symptoms if expanding or pressing on surrounding structures. Consult a vascular surgeon if there are questions.