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Biomedical subjects

A Passerini

Publications and source records attributed to A Passerini.

At least 37 records · Page 2Linked to original sources
PubMed1978

The hypodense meningioma: report of two cases.

Cystic or necrotic hypodense areas are occasionally seen within meningiomas on CT scans. Two diffusely hypodense endotheliomatous meningiomas are reported. The low density was due to a microcystic structure, which caused a spongy appearance and consistency.

Cerebral Angiography↗
PubMed1978

Determination of cerebrospinal fluid shunt function with water-soluble contrast medium.

Determination of cerebrospinal fluid shunt patency with water-soluble contrast medium is a simple, rapid, reliable, and safe technique. Since September, 1974, the authors performed 113 examinations. With the Spitz-Holter valve, only the atrial catheter can be studied, but, with the Pudenz valve and with the shunting devices that have a double-dome reservoir, both the proximal and the distal catheter can be visualized. Through the ventricular catheter a full ventriculographic study can be made, demonstrating ventricular size, malposition of the catheter, and the lesion that caused the hydrocephalus, or its evolution. The problem of collapsed ventricules, in which clinical and "manual" evaluation of the flushing device can give misleading findings, is emphasized. The injection of the atrial or peritoneal catheter in the pathological cases demonstrated its blockage, level of disconnection, malposition, sleeve, or cyst formation. Computerized tomography has only slightly decreased the number of these studies: when the ventricles are large, the examination with water-soluble contrast medium is still needed to demonstrate the exact level of malfunction. This demonstration has decreased the number of the total revisions complete changes of shunting systems, eliminating some unnecessary changes of normally functioning catheters.

Adolescent↗
PubMed1976

The lateral recess of the fourth ventricle examined with a water-soluble contrast medium.

Difficulties still remain in the routine radiologic examination of the lateral recesses of the fourth ventricle. Ventriculography with the direct introduction of water-soluble contrast medium into the third ventricle has improved the results. The normal anatomic and radiologic appearances and pathologic changes of the lateral recesses are discussed.

Brain Neoplasms↗