Abstract
Splenic artery aneurysm is considered to be a relatively uncommon disease. It is difficult to diagnose asymptomatic cases of splenic artery aneurysm when the physician does not recognize the presence of this disease. The recent development of diagnostic imaging technology has resulted in an increasing number of reported asymptomatic cases of splenic artery aneurysm using ultrasonography and computed X-ray tomography. An asymptomatic case of a 44-year-old woman who had an abdominal mass around the splenic hilus detected with ultrasonography is reported. Color-coded Doppler ultrasonography led to a preoperatively confirmed diagnosis of splenic artery aneurysm with the detection of intraluminal arterial flow in the mass. The aneurysm was a semispherical mass, 20×16×13mm in size. At operation, only aneurysmectomy was carried out and splenectomy was not performed. The patient was discharged with a complete cure on the 18th postoperative day. Color-coded Doppler ultrasonography is extremely effective in the diagnosis of abdominal splanchnic artery aneurysms.