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Hepatic metastases or mass lesion near the head of the pancreas are usually found when echograms are performed on patients with malignant disease of the biliary tract. Atypical cholesonograms may result when the gall bladder itself is deformed or invaded by tumor, when tumor obstructing the bile...
A case of hydranencephaly was demonstrated antenatally by ultrasound and correlated with ventriculography and computed cranial tomography. Prenatal diagnosis of intracranial abnormalities by careful attention to intracranial anatomy is possible and can facilitate obstetrical management.
The authors discuss the value of routinely using the left lateral decubitus position for ultrasound evaluation of th gall bladder. This technique often affords improved visualizaiton, clarifies abnormalities suspected in the supine position, and in some cases demonstrates a gall bladder that...
Hyperextension of the fetal head in the breech presentation can be diagnosed by ultrasound. Straightening of the fetal spine and the widest diameter of the skull posterior to the long axis of the spine is diagnostic. Face presentation should also be diagnosable by these criteria.
A detailed comparison of computed tomography and ultrasonography of the abdomen is presented from a theoretical point of view. The advantages and limitations of both modalities are discussed in terms of scan content, resolution, plane of interrogation, dynamic imaging, examination time, imaging...
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