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Systems for classification and grading used in pathology should ideally be biologically meaningful and at least be reproducible from one pathologist to another. A statistical method to evaluate reproducibility (non-chance agreement) for several observers using nominal or ordinal categories has been developed and refined over the past few decades--the kappa(More)
We report on the case of a spontaneous intracranial hypotension with subdural hygroma, as well as cerebral venous thrombosis (CVT), both known complications of intracranial hypotension. The 45-year-old patient was subsequently treated - according to current guidelines for CVT - with anticoagulation, but developed subdural haematoma (SDH), which required(More)