Reversible paraneoplastic cerebellar symptoms pointing to carcinoma of thebreast

A 67-year old female first developed diplopia, tinnitus, nausea and vertigo followed by severe truncal ataxia. After complete examination breast cance r was discovered and treated. Furthermore, anti-Ri antibodies against Purki nje cells of the cerebellum were detected. After breast-conserving therapy the neurological symptoms improved substantially. In summary we report on a rare paraneoplastic cerebellar degeneration in a patient with breast cance r and a prognostically good course of the neurological symptoms.