PT - JOURNAL ARTICLE AU - Eman Butt AU - John A Tadross AU - Karan R Chadda AU - John Latimer TI - Rare case of paraneoplastic cerebellar degeneration secondary to high-grade serous carcinoma of tubo-ovarian origin AID - 10.1136/bcr-2019-229777 DP - 2019 Aug 01 TA - BMJ Case Reports PG - e229777 VI - 12 IP - 8 4099 - http://casereports.bmj.com/content/12/8/e229777.short 4100 - http://casereports.bmj.com/content/12/8/e229777.full SO - BMJ Case Reports2019 Aug 01; 12 AB - This case describes a 69-year-old woman, who presented with rapidly progressive cerebellar symptoms and unintentional weight loss. Full neurological assessment excluded space-occupying lesions, vascular accidents and infection. Surprisingly, a chest, abdomen and pelvis CT showed a left hemipelvis mass, which was subsequently biopsied. A high-grade serous carcinoma of tubo-ovarian origin was found, diagnosing paraneoplastic cerebellar degeneration (PCD) secondary to this. The exact mechanism is not known, but is thought to be immune-mediated. In cases of PCD, after cancer treatment, the neurological disability stabilises to a severe level and will unfortunately be lifelong. Our patient continues to make great progress with intensive rehabilitation for her ongoing balance issues. Early recognition of PCD can lead to a prompt diagnosis of the underlying malignancy and hence subsequent management. This can at least limit the extent of the neurological disability of the disease and increase the survival rate from cancer.