Examples of these precipitants include, but are not limited to that of tumour haemorrhage or infarction, surgical manipulation of the tumour, abdominal trauma, general anaesthesia, and drugs e.g. steroids, glucagon, tricyclic antidepressants, sympathomimetics, and β-blockers (before adequate α-blockade).9 The gene discussed is GCG; the disease is neoplasm.