Résumé
Pancreaticoduodenal artery pseudoaneurysm is one kind of rare splanchnic artery aneurysm. Hemorrhage from the lesion could be life-threatening. We present a case which color Doppler ultrasound and computed tomography angiography (CTA) only showed pancreatic pseudocyst on the background of chronic pancreatitis at first, but contrast-enhanced ultrasound detected blood flow in the pseudocyst and a pancreaticoduodenal artery pseudoaneurysm was worked up several days after. Finally, the pancreaticoduodenal artery pseudoaneurysm was confirmed by digital subtracted angiography. It might suggest the potential advantage of contrast-enhanced ultrasound in evaluating this kind of disease in comparison of CTA.
Sujets)
Adulte , Humains , Mâle , Faux anévrisme , Imagerie diagnostique , Duodénum , Imagerie diagnostique , Pancréas , Imagerie diagnostique , ÉchographieRésumé
<p><b>OBJECTIVE</b>To evaluate the clinical value of high frequency ultrasound in diagnosing peripheral nerve diseases (PNDs).</p><p><b>METHODS</b>From January 2003 to December 2006, 64 cases of PNDs were analyzed retrospectively. The ultrasound diagnosis was compared with the operative and pathological diagnosis.</p><p><b>RESULTS</b>Based on the operative and histopathological results, in 38 patients with trauma or entrapment, 38 among 45 traumatic nerves were rightly diagnosed by ultrasound. The coincidence rate was 84.4%. In 26 patients with original peripheral nerve tumors (PNTs), including 20 neurilemmomas, 4 neurofibromas and 2 malignant neurilemmomas, 16 cases were diagnosed by ultrasound with a coincidence rate of 61.5%. The coincidence rates in limbs and trunk were 86.7% (13/15) and 27.3% (3/11) respectively.</p><p><b>CONCLUSIONS</b>The study suggests that high frequency ultrasound can locate peripheral nerve trauma precisely, assess the impair degree correctly and provide useful information for clinic diagnosis. The high frequency ultrasound brings better diagnosis outcome in limbs nerve tumors than in trunk.</p>