Q: Why Splenic Artery Aneurysms (SAAs) can sometimes be diagnosed on plain X-ray?
Answer: Although SAAs are not common still it is the third most common abdominal artery aneurysm, after the aorta and iliac arteries. SAAs are commonly calcified, making them visible on plain x-ray. It is also known as a "Chinese dragon sign". It is more common in pregnant females or women over the age of 50 years. Underlying risk factors are atherosclerosis, portal hypertension, inflammatory conditions, cirrhosis, vascular diseases, and connective tissue disorders. It is a clinically important disorder as rupture can be fatal.
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References:
1. Čolović R, Čolović N, Grubor N, Kaitović M. [Symptomatic calcified splenic artery aneurysm: case report]. Srp Arh Celok Lek 2010; 138:760.
2. Rahmoune FC, Aya G, Biard M, et al. [Splenic artery aneurysm rupture in late pregnancy: a case report and review of the literature]. Ann Fr Anesth Reanim 2011; 30:156.
3. Lakin RO, Bena JF, Sarac TP, et al. The contemporary management of splenic artery aneurysms. J Vasc Surg 2011; 53:958.
4. Maillard M, Novellas S, Baudin G, et al. [Splenic artery aneurysm: diagnosis and endovascular therapy]. J Radiol 2010; 91:1103.
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