In cases of herpes simplex encephalitis, a low density lesion in the temporal lobe is a common CT finding, whereas hemorrhagic lesion is rarely observed on CT in this disorder despite the frequent occurrence on pathologic studies. Two cases of hemorrhagic lesion observed on CT in herpes simplex encephalitis are reported, and atypical CT findings of herpes simplex encephalitis is discussed.
The authors report an adult patient with an asymptomatic interhemispheric cyst demonstrated by computerized tomography (CT), magnetic resonance imaging (MRI) scan and angiography. Partial agenesis of the corpus callosum is associated.
A 55-year-old woman with a giant cavernous hemangioma in the liver with hemoperitoneum due to blunt abdominal trauma was reported. CT findings of the liver at first thought to be hepatic injuries. But serial studies revealed that the CT findings were dependent on giant cavernous hemangioma and apart from hepatic injury.
Reported here is a extremely rare case of extramedullary plasmacytoma which occurred in the mesenteric lymph nodes and could be diagnosed before operation. The ultrasound examination showed a multilobular mass, the CT examination a multilobular, homogeneous mass, and angiography a hypervascular lesion. M-protein decreased after operation.
A 42 year old female patient with an unusual vascular tumor, a malignant fibrous histiocytoma of the aortic arch is described. The clinical, radiological and pathological features of this case are presented.
We studied 81 cases of organic bowel obstruction. In complex obstruction 7 cases out of 25 (28%) were diagnosed on the plain film before operation, although in simple obstruction 54 cases out of 56 (96%). But in retrospective evaluation of the plain films, we noticed that in some cases of complex obstruction, marked small bowel obstruction and ascites were seen from the onset, which were never seen in simple obstruction. We considered this finding as the key point for the roentgenological differentiation between complex and simple obstruction.
We reviewed the initial emergency-room plain pelvic radiographs of 75 patients with pelvic fracture. In thirty-six patients transcatheter arterial embolization (TAE) was performed for retroperitoneal hemorrhage associated with pelvic fracture (TAE group) and in 39 patients (non-shock group) TAE was not required. In TAE group, fractures involving iliosacral region and pubic symphysis were more dominant than in non-shock group. Specific soft tissue abnormal shadow of TAE group was not present. It may be impossible to determine the necessity of TAE in pelvic fracture on the basis of plain pelvic radiograph.
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