While preparing a case of encapsulated brain hemorrhage for presentation at a meeting of the Philadelphia Neurological Society, it was found that in the records of the neuropathology laboratory of the Philadelphia General Hospital there were only two cases of this character in about four thousand cases studied in the laboratory. Dr. W. G. Spiller kindly allowed me access to his collection, in which were three similar cases in about eight hundred. The small incidence led me to consider that they should be reported.
A study of the literature of these cases seems to show that a brain hemorrhage, even when rather extensive, does not cause sudden death and that even recovery may occur, provided that the hemorrhage is either walled off, if large, or absorbed, if small. To my knowledge, however, only two such cases have been reported in English. Spiller 1 reported a case in 1906 among thirteen
Robinson GW. ENCAPSULATED BRAIN HEMORRHAGES: A Study of Their Frequency and Pathology. Arch NeurPsych. 1932;27(6):1441–1444. doi:https://doi.org/10.1001/archneurpsyc.1932.02230180170011
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