ABSTRACT
Forty six patients with focal hepatic lesions proved by pathologic diagnosis were evaluated using radionuclide liver studies [Tc-99m colloid, Tc-99m HIDA and AFP assay], as well as ultrasound techniques. The overall sensitivity and specificity of ultrasound and scintigraphy techniques for the detection of malignant lesions were nearly equal [88.9%] and [88.3%0 respectively], but it was only [47.1%] using AFP. The nuclear medicine studies were more specific in [82.1%] versus [60.7%] in ultrasound technique. The present study revealed that nuclear medicine techniques were more sensitive than ultrasound in the evaluation of regenerating nodule of cirrhosis [76.9%, 60% and 26.7%], while the specificity has amounted to 86%, 90.3% and 96.7% in AFP, scintigraphy, and ultrasound respectively. On the other hand, ultrasound was superior in diagnosis of benign lesions sensitivity [71.4%] as compared with [14.3%] respectively. The findings also revealed that AFP was not sensitive in the evaluation of benign lesions [sensitivity was 0%, while the specificity was 63.3%]
Subject(s)
Humans , Radionuclide Imaging , Ultrasonography , alpha-FetoproteinsABSTRACT
Twenty patients were studied by combined perfusion-ventilation lung scanning before and after major surgical procedures. All cases showed a normal preoperative scans, except for a single case which showed chronic obstructive lung disease. Fifteen patients were still having normal scans in the postoperative period, whereas the other five cases showed significant change. There was mismatching between perfusion and ventilation scans in 4 cases, while the 5th case showed matched defects with collapsed segment in x-ray and was not considered as thromboembolic disease. So the incidence of post operative pulmonary embolism was 4/20 patients [20%]. Clinical symptoms were evident in two patients, one of them died in the recovery room and other improved on heparin therapy