Erler-Zimmer GmbH & Co. KG 3D model of a ruptured thoracic aortic aneurysm:
- Model Number: MP2043
- Clinical history:
There are no clinical data for this product. - Pathology:
The heart shows both ventricles from the dorsal view. The thoracic aortic arch is markedly dilated with several atherosclerotic plaques and a posterior rupture (identified by dark staining). Both chambers are hypertrophied. The coronary arteries, along with the aortic and interventricular valves, are normal. This is an example of a ruptured aortic arch aneurysm. - Additional information:
Aortic dilation is a common incidental finding on transthoracic echocardiography performed for unrelated purposes.
The thoracic aorta is divided into 3 parts: the ascending, the arch, and the descending. The ascending aorta begins behind the aortic valve and ends directly at the superior costal artery (brachiocephalic trunk). It is approximately 5 cm long and consists of two distinct segments. The lower segment, called the aortic root, includes the coronary sinuses and the sinotubular junction (STJ). The upper segment, called the ascending tubular aorta, begins at the STJ and extends to the aortic arch (superior costal artery). More than 50% thoracic aortic aneurysms are localized in the ascending aorta, which can affect either the aortic root or the tubular segment of the aorta.
An aneurysm is defined as a localized dilatation of the aorta that exceeds 50% of the predicted diameter (observed diameter to expected ratio = 1.5). An aneurysm should be distinguished from ectasia, which is a diffuse dilatation of the aorta that is less than 50% of the normal aortic diameter. The incidence of ascending thoracic aortic aneurysms is estimated to be approximately 10 cases per 100,000 person-years[1]. - Reference:
1. Saliba et al. (2015). Int J Cardiol Heart Vasc. 6: 91-100.
3D models of ruptured thoracic aortic aneurysm – Erler-Zimmer Anatomy Group
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