A Case of Pulmonary Sequestration Diagnosed by Doppler Sonography / 결핵

Pulmonary sequestration is a rare congenital malformation during embryouic development which results in a cystic mass of nonfunctioning lung tissue. A diagnosis of a pulmonary sequestration has traditionally relied upon identifying the pathological arterial vessels by arteriography, computed tomography, and magnetic resonance imaging. We reported a case of pulmonary sequestration diagnosed by Doppler sonography and subsequent CT angiography. A 21-year-old-woman admitted to hospital for an investigation of recurrent pneumonia with left lower chest pain. A doppler ultrasound sonography showed an aberrant blood supply from the descending thoracic aorta to the left lower chest lesion. The pulmonary sequestration was confirmed by the subsequent CT angiograph.

Detection and Localization of Islet Cell Tumor of the Pancreas: Usefulness of the Arterial Dominant Phase Images of Spiral CT

PURPOSE: To evaluate the usefulness of the arterial dominant phase images of spiral CT in the detection and localization of pancreatic islet cell tumor. MATERIALS AND METHODS: Six patients with pathologically proven isletcell tumors of the pancreas were studied with two-phase spiral CT. Images of the arterial dominant phase and delayed phase were obtained at 30 and 180 seconds after the initiation of injection of 100 ml of contrast materialat a rate of 3ml/sec. The parameters of scanning were 3-mm thickness, table speed of 4mm/sec, and reconstruction at 2-mm intervals. Images were prospectively analyzed and the operative findings were used as the reference standard for tumor detection and localization. RESULTS: On arterial dominant phase images, lesions were definitely depicted in five patients(83%) and were suspicious in one (17%). In the delayed phase, only two tumors(33%) were demonstrated. CONCLUSION: The arterial dominant phase of spiral CT is useful in the preoperative detection and localization of islet cell tumor of the pancreas.