out of the University of Texas Southwestern Medical Center in Dallas, researchers mined a database of childhood Hodgkin's Lymphoma survivors. From that database, researchers identified 1,926 people who had survived Hodgkin's more than five years after being diagnosed between 1970 and 1986. Researchers identified 24 Hodgkin's survivors who later reported a stroke and compared that to the siblings of cancer survivors, where only nine of more than 3,800 had suffered strokes. The incidence of strokes - 83.6 per 100,000 person-years for Hodgkin disease survivors and 8.0 per 100,000 person-years for the control group - demonstrated that Hodgkin's Lymphoma survivors were at a 4 times increased risk of suffering a stroke. Patients who had Mantle Field radiation also were associated with subsequent strokes. Double Ouch.
1986 was before some of the more modern treatments like ABVD chemotherapy.