erally from the aortic arch. Enlargement of the nipple is usually due to dilation of the left superior intercostal vein as it heads for the left innominate vein lateral to the aortic arch. Where the superior vena cava or, occasionally, the inferior vena cava-is obstructed, the aortic nipple becomes prominent and enlarged (1-4); according to Friedman et al. (1), a nipple larger than 4.5 mm in di...

Computed tomography (СТ) with contrast enhancement allows a detailed anatomical description of feline thoracic aorta. For this purpose, 14 sexually mature clinically healthy domestic cats weighing 2.9 to 4.0 kg were investigated. The animals were anaesthetized and fixed in dorsal recumbency on a СТ table (Tomoscan, CX/Q, Siemens). Consequent transversal 5 mm cross-sections were made along the t...

A case of successful replacement of two coexistent chronic post-traumatic aneurysms of the thoracic aorta is presented. Presumably, these aneurysms at the aortic isthmus and the descending thoracic aorta resulted from two different deceleration traumas.

A 54-year-old male who had been experiencing a high fever for a month was admitted to a local hospital for examination. Computed tomography revealed saccular aneurysms in the descending thoracic aorta and infrarenal abdominal aorta. The walls of the aneurysms were thickened and enhanced by intravenous contrast which suggested the inflammatory change. He was transferred to this hospital and unde...

OBJECTIVE To describe the fate of the false lumen remaining in the descending thoracic aorta after extensive primary repair of the thoracic aorta by the modified elephant trunk technique with a stent graft for acute type A aortic dissection, particularly the changes of the false lumen on enhanced CT scanning. METHODS The subjects were 65 consecutive patients who received arch replacement with...

AIMS Thoracic aortic aneurysm (TAA) is potentially life-threatening and requires close follow-up to prevent aortic dissection. Aortic stiffness and size are considered to be coupled. Regional aortic stiffness in patients with TAA is unknown. We aimed to evaluate coupling between regional pulse wave velocity (PWV), a marker of vascular stiffness, and aortic diameter in TAA patients. METHODS In...

To determine whether rotational blood flow or chiral asymmetry exists in the human descending thoracic aorta, we established the ability of color Doppler ultrasound to detect rotational flow in a tornado tube model of a vortex descending fluid column. In a model of the human aortic arch with a pulse duplicator, color Doppler was then used to demonstrate that rotational flow occurs first in the ...

Introduction: Aneurysms of the descending thoracic aorta are potemtially life threatening situations. Treatment entails either conventional surgical treatment by means of a left lateral thoracotomy or the minimally invasive endovascular treatment. Surgery is indicated when the size of the descending aorta is over 5.5 cm, or there is rapid expansion of the aneurysm. Maximum size of the aorta in ...

OBJECTIVES The study determined, in a population-based setting, whether dilatation of the thoracic aorta is an atherosclerosis-related process. BACKGROUND The role of atherosclerosis in thoracic aortic dilatation and aneurysm formation is poorly defined. METHODS The dimensions of the thoracic aorta were measured with transesophageal echocardiography in 373 subjects participating in a population...

Frequency The prevalence of aortic aneurysms is higher than 3-4% in persons over 65 and over the last 30 years the overall prevalence has increased significantly. The estimated incidence of thoracic aortic aneurysms is 6 cases per 100.000 person/years. Classification Thoracic aneurysms (TAA) are subdivided into 3 groups depending on location: n aneurysm of ascending aorta+/-valvular lesion name...