Cisternal Changes Produced by Experimental Balloon Tumours in the Posterior Cranial Fossa

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A detailed analysis of the deformities of the subarachnoid cisterns was carried out in a clinical material of 65 cases with cerebellar tumours examined by encephalography. The distortion of the cisterns was related to 8 different tumour positions, and the results compared with those from a previous experimental investigation. Typical cisternal distortions for cerebellar tumours are listed, constituting a basis for a general analysis of the cisternal abnormalities demonstrated by whatever means of neuroradiologic procedure employed: pneumography, computer tomography or cisternography with positive contrast medium.

Cisternal Abnormalities Produced by Clinical Tumours in the Posterior Cranial Fossa

Lindqvist¹

1980

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Cisternal Abnormalities Produced by Clinical Tumours in the Posterior Cranial Fossa

Lindqvist¹

1980

The pneumographic appearances of the subarachnoid cisterns have been analysed in detail in a clinical series of 17 patients with brain stem tumours and in 40 with pontine angle tumours. The cisternal distortions may be used to distinguish tumours in the pons from tumours in the medulla oblongata and also to distinguish tumours of the pontine angle with different modes of growth, e.g. tumours mainly indenting the cerebellar hemisphere from those mainly indenting the brain stem. The results should be applicable also for an analysis of cisternal pathology by other methods such as computer tomography and cisternography with positive contrast media.

Cisternal Abnormalities Produced by Clinical Tumours in the Posterior Cranial Fossa

Lindqvist

1980

A detailed analysis of the distortion of the subarachnoid cisterns produced by intraventricular tumours of the fourth ventricle was carried out on a clinical material of 30 patients examined with pneumography. The cisternal distortions in cases with a tumour originating from the roof of the ventricle have been compared with those in tumours originating from the floor, and the typical appearances for each group of tumours are recorded. The results should be applicable when analysing cisterns examined not only with pneumography but also with other radiologic methods, such as computer tomography and cisternography with positive contrast media.