“…Multiple conditions may impair its function (Table 1); most are found in primary neurologic disorders, diabetes mellitus, or chronic renal disease. There have been reports of autonomic dysfunction in cancer patients patients [1,2,4,5,6,7,8,11,12,13,15,16,17,19,20,22,23,24,25,26,27,28] (Table 2), but most are case reports. Our clinical experience suggests that this abnormality may be common in advanced cancer, where a fixed pulse rate, low blood pressure and symptoms of gastroparesis are common.…”