. Tumours, innocent and malignant; their clinical characters and appropriate treatment. onging to the fourth ventricle which at thisspot emerge from the cornucopia. It is easy to understand that tumours growing in closerelation with such important nerves as the trigeminal, facial,vagus, would soon lead to symptoms and surely attract at-tention, and, as a matter of fact, a large number of exampleshave been recorded under a variety of names, such as sar-comatous tumours of the fifth and seventh nerves; fibro-sarcomatous tumours of the flocculus; symmetrical tumoursof the medulla, and the like. A
. Tumours, innocent and malignant; their clinical characters and appropriate treatment. onging to the fourth ventricle which at thisspot emerge from the cornucopia. It is easy to understand that tumours growing in closerelation with such important nerves as the trigeminal, facial,vagus, would soon lead to symptoms and surely attract at-tention, and, as a matter of fact, a large number of exampleshave been recorded under a variety of names, such as sar-comatous tumours of the fifth and seventh nerves; fibro-sarcomatous tumours of the flocculus; symmetrical tumoursof the medulla, and the like. A man with bilateral tumours of this kind was violent,blind, deaf, and suicidal (Strahan). In another case a psam- PSAMMOMAS 413 moma measuring 75 by 6 cm., growing from tlie membranesimmediately covering the median lobe of the cerebellum ina lad, caused headache, vomiting, blindness, optic neuritis,priapism, opisthotonos, and other disturbances, ending indeath (Beevor). Psammomas of the spiral membranes are as dangerouswhen seated high in the spinal canal as psammomas near Pia mater. Fig. 203.—Portion of the spinal cord with a psammoma situated at the level of theintervertebral disc between the tenth and eleventh thoracic vertebrse. From awoman 46 years of age. {Museum, Middlesex Hospital.) the flocculus. In the spinal canal these tumours do notattain a large size—indeed, in the few recorded cases there issingular uniformity in their shape and dimensions (Fig. 203). Treatment.—Psammomas of the spinal membranes havebeen successfully removed by surgeons. In the cranial cavitythe accurate diagnosis and localization of such tumours hasbeen accomplished; they have also been removed, even whenlying in the vicinity of the flocculus, in spite of their sub-tentorial situation, but rarely with success. Psammoma-bodies are fairly common in the choroid 414 ENDOTHELIAL TUMOURS plexuses of the lateral ventricles of horses. When the tumoursare large they produce grave and even furious s
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectneoplasms, bookyear19
