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Biomedical subjects

L Penning

Publications and source records attributed to L Penning.

At least 55 records · Page 3Linked to original sources
PubMed1976

Cerebrospinal fluid (CSF) ex vacuo.

CSF ex vacuo is a proposed designation for abnormal collections of CSF replacing brain tissue which is absent or has disappeared as a result of maldevelopment, injury, infection, vascular disturbances, brain atrophy, etc. In the literature, designations such as arachnoidal, leptomeningeal and porencepalic cyst, and hydrocephalus ex vacuo, are commonly used. Even if the neuroradiological findings in CSF ex vacuo are impressive, its clinical significance may be nil or minor. However, CSF ex vacuo may develop expansive tendencies, the cause of which is not yet fully understood. On the basis of schemiatic drawings of the neuroradiological findings of eight cases of CSF ex vacuo the variations in aetiology, localization, diagnostic detectability, clinical significance and surgical implications are briefly discussed.

Adolescent↗
PubMed1975

Convexity leptomeningeal cysts diagnosed by scinticisternography.

The scintigraphic diagnosis of eight convexity leptomeningeal cysts is described; the cysts appear as a local collection of abnormal radioactivity, best seen at 48 hours. The correlation of the scintigraphic findings with clinical, radiological, and operative findings is discussed.

Adolescent↗
PubMed1973

Leptomeningeal cysts diagnosed by isotope cisternography.

The diagnosis of leptomeningeal cysts by isotope cisternography is described in four cases. The cysts are visualized as abnormal local collections of the radiopharmaceutical, best demonstrated 48 hours after lumbar injection. The investigation makes it possible to diagnose the cyst at an early stage, before severe clinical symptoms and changes in the bones of the skull develop. Cases of leptomeningeal cysts in various areas of the brain are described.

Adenoma, Chromophobe↗
PubMed1972

The study of infantile hydrocephalus with combined air and isotope ventriculography.

A method for a combined air and isotope ventriculography is described. Twenty-nine infants with suspected hydrocephalus were studied. The merit of the combined study is the possibility of obtaining both anatomical and functional information. A very small amount of radioactivity-15 μc-was found to give satisfactory results. Patterns of cerebrospinal fluid flow in communicating and non-communicating hydrocephalus and in cases of porencephalic cyst and complete obstruction of the lateral ventricles are described.

Cerebral Ventriculography↗
PubMed1972

Porencephaly diagnosed by isotope cisternography.

The diagnosis of porencephaly by isotope cisternography is described. In the three cases presented, porencephaly was associated with non-resorptive hydrocephalus. The communicating hydrocephalus caused the isotope to enter the ventricular system and visualize the cyst, and the diagnosis of both disorders was established by RIHSA cisternography. The method is simple and non-traumatic and provides information about abnormalities which air may fail to demonstrate.

Adult↗