Breast Surgery Unit, St George's Hospital NHS Trust, London, UK. alia.noorani@stgeorges.nhs.uk.
ABSTRACT: Paraneoplastic cerebellar degeneration is part of a rare spectrum of neurological syndromes whereby gynaecological, lung or breast cancers present primarily with neurological manifestations. The presence of onconeural antibodies and PET scanning help in the challenging diagnosis of these conditions but despite the treatment of the primary cancer, the prognosis for the neurological symptoms is poor.