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There are many types of Aortic Aneurysms , the two major types are:are classified based on their anatomical locations. Largely, they can be divided into two classes: thoracic aortic aneurysm (TAA), those that are in the thoracic aorta, and abdominal aortic aneurysm (AAA), those that are in the abdominal aorta.

TAA can further be divided into:

1. Aortic root aneurysmTAA: thoracic aortic aneurysm, may further be sub-classified based on location:
2. Ascending aortic aneurysm
3. Aortic arch aneurysm
4. Descending aortic aneurysm
5. Aneurysm that straddles multiple portions of the aorta (i.e. from aortic arch to descending aorta)

AAA

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1. Above the renal artery
2. Below the renal artery
3. In the renal artery

can be classified as:

1. Suprarenal aortic aneurysm: above the kidneys
2. Infrarenal aortic aneurysm: below the kidneys.
3. Others: Pararenal, Jaxtarenal aortic aneurys.

Most patients with aortic aneurysms (AA) are asymptomatic at the time of diagnosis, because the aneurysms are typically discovered incidentally on imaging studies. When an AA reaches medium to large size (>5cm), symptoms may manifest.

Symptoms for TAA are: patients may suffer a local mass effect, such as compression of the trachea or mainstem bronchus (if in the area of the lungs, will cause cough, dyspnea, wheezing, or recurrent pneumonitis), compression of the esophagus (causing dysphagia), or compression of the recurrent laryngeal nerve (causing hoarseness). Chest pain, generally described as deep and aching or throbbing.

Symptoms of AAA are: pain in the chest, abdomen, lower back, or flank (over the kidneys). A pulsating feeling in the abdomen. A "cold foot" or a black or blue painful toe.

When a patient has abdominal aortic aneurysm of a substantial size, the patient may also have synchronous and metachronous 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 somewhereYou don’t know if someone has aortic aneurysms. You may do screening tests based on family history. Sometimes, some symptoms may be experienced such as back pain, chest pain, pain in the lower abdomen that may be indicative of aortic aneurysm. If someone does have TAA, the possibility of synchronous and metachronous TAAs may be present. So you look at both chest and abdomen. If AAA is present but TAA is not, you make a note too.

Case 1 - Subject has both TAA and AAA

The subject had CT scans performed at the chest and abdomen to look for the presence of aneurysms, if there are any:.

Modeling both TAA and AAA in the CV domain, note for viewing simplicity, some variables are omitted from the table below.

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The subject had CT scans performed at the chest and abdomen to look for the presence of aneurysms, if there are any:.

If I were to model this in CV, I could show that AAA is detected along with its diameter measurement. On top of that, TAA is not detectedModeling the presence of AAA and the absence of TAA in CV.