Paraneoplastic cerebellar ataxia with anti-Yo antibody positivity is seen in:
Breast and ovarian malignancy
Breast and lung malignancy
Ovarian and small cell carcinoma lung
Small cell carcinoma lung and hodgkins disease
Paraneoplastic cerebellar ataxia is associated with 1. Breast and ovarian cancers (anti-Yo) 2. Small-cell lung cancer (anti-PQ type voltage-gated calcium channel) 3. Hodgkin's disease (anti-Tr) Ref: Harrison, E-18, P-3336.