. Internal medicine; a work for the practicing physician on diagnosis and treatment, with a complete Desk index. d by pressure on the opticchiasm (bitemporal hemianopsia, advancing to total blindness) ; oculo-motor palsies, anosmia, etc. The X-ray may show changes in the sellaturcica, especially the clinoid processes. There is a form of epilepsy some-times seen in pituitary cases, the so-called uncinate type of fits, ushered inwith a gustatorj^ or olfactory aura, due to involvement of the neighboringuncinate gyrus. The X-ray may also be useful in other brain tumors: as in a case oftumor of the
. Internal medicine; a work for the practicing physician on diagnosis and treatment, with a complete Desk index. d by pressure on the opticchiasm (bitemporal hemianopsia, advancing to total blindness) ; oculo-motor palsies, anosmia, etc. The X-ray may show changes in the sellaturcica, especially the clinoid processes. There is a form of epilepsy some-times seen in pituitary cases, the so-called uncinate type of fits, ushered inwith a gustatorj^ or olfactory aura, due to involvement of the neighboringuncinate gyrus. The X-ray may also be useful in other brain tumors: as in a case oftumor of the pineal body, published by Lloyd. In that case there were calca-reous deposits, giving a good shadow; but in most cases the X-ray platesrequire veiy cautious interpretation. Diagnosis.—The above brief sketch sets forth the ]ii-inciples of localdiagnosis; but brain tumors cause a wide variety of symptoms, both generaland local, and these must be interpreted with care. A successful local diag-nosis is frequently possible, and is often made. Tumor may simulate abscess, but the history- and course are usually. Fig. 377.—Tumor of the cerebellui:.. .-;, to one side.—Lloyd. red 710 MEDICAL DIAGNOSIS. different; there is no history of a precedent focus of suppuration, thereis no evidence of sepsis, the evolution is more gradual, and as a rule theduration is longer. Hemorrhage is not likely to be mistaken for tumor;the onset is entirely different. It is sudden, the symptoms are establishedquickly, and the case is not progressive. Yet a tumor in the motor region,causing hemiplegia, has been mistaken for a long-standing paralytic strokedue to hemorrhage. The history, the presence of optic neuritis and ofheadache in the case of tumor, should prevent error. Syphilis of the brainmay closely simulate brain tumor, especially if the headache and opticneuritis are associated with focal symptoms, but the symptoms of syphilisoften pursue an irregular course, quite unlike the stea
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmedicine, bookyear192
