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When a patient has abdominal aortic aneurysm of a substantial size, the patient may also have synchronous (at the same time) and metachronous (developed subsequently) thoracic aortic aneurysm. If causes and conditions are present to create an aneurysm in a large-medium size vessel in one place, you are more likely than those without those causes and conditions to have (or develop) another aneurysm somewhere. When a large abdominal aortic aneurysm is diagnosed, screening for TAA is usually recommended. The pressure from the medium to large aneurysm may also cause arterial dissection where the wall of the artery is tore, and a "false lumen" forms within the wall of the artery and blood can leak into it - leading to rupture.

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The concept map below transforms the general process figure above into CDISC-compliant format. Note the (TST) and (RES) prefixes are done intentional in the map to show: measurement (--TEST) location vs result (--ORRES) location, respectively.

The patient had undergone a diagnostic intervention, during which a CT scan was done on the chest and abdomen of the subject (PRLOC). The CT scan created images of the thoracic and abdominal regions. An evaluator reviewed the images of thoracic region and abdominal region (TSTLOC), to find whether aneurysms and arterial dissection are present.

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