Paraneoplastic cerebellar degeneration in a woman with ovarian cancer

Background A 52-year-old white female presented with sudden onset of light-headedness followed by diplopia, horizontal vertigo and severe nystagmus with oscillopsia. She had previously been in good health. MRI of the brain was normal. Lumbar puncture revealed monocytic pleocytosis. During her initial admission, the patient improved to some degree and was discharged with a possible diagnosis of viral meningitis. After a few weeks, the patient's condition worsened and further evaluation was initiated. Examination revealed an unsteady widespread gait, severe nystagmus and mild dysarthria. A general and gynecological examination was otherwise unremarkable.