A 72-year-old lady was reviewed in the out patients clinic. She complained of shortness of breath on exertion and a worsening of several years of swelling of the legs. She was recently diagnosed with atrial fibrillation. She was under the care of the haematologists with a diagnosis of non-Hodgkin’s lymphoma made some 3 years before. Chemotherapy treatment had been given, and the patient was clinically in remission.