Clinical Neuroscience

[Ossified subdural haematomas ]

ÁFRA Dénes1

JULY 01, 1960

Clinical Neuroscience - 1960;13(07)

[The author reports on two subdural haematomas of chronic, calcified and ossified subdural haematomas diagnosed alive and successfully operated. After a literature review, he emphasizes the extreme rarity of the findings, while at the same time drawing attention to the importance of clinical and pathological observations that can be of value in the pathogenesis of subdural haematoma. After a detailed description of the pathological course of the two patients and the surgical and pathological findings, the cases are analysed from a clinical and pathological point of view in comparison with the literature. Histopathological examination of ossified subdural haematomas reveals a progressive degenerative phenomena based on connective tissue organization, which requires many years of both our own and literature experience. There is no specific, particular theory or explanation for the process of calcification and ossification, but the author classifies the process as dystrophic calcifications or metaplastic ossifications. This only shows the persistence of the haematoma over many years - but with balanced intracranial dynamics. The true subdural location of the haematoma and the secondary organisation of the haematoma are supported by the macro- and microscopic independence of the intact dura and bony haematoma from its immediate environment. These observations are valid against rather than for the inflammatory, pachymeningitis theory. ]

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