A review of current opinion on paraneoplastic syndrome pathology is presented. It is supplemen- ted by a reference to the author’s own cases (paraneoplastic cerebellar degeneration with Purkin- je cell lesion and vacuolar spongiform degeneration of the granuloneuronal layer of the cerebellar cortex).

        Key words: pathology of paraneoplastic syndrome - paraneoplastic cerebellar degeneration - revi-