Egypt's 8m Christians, about 10% of the population, are understandably anxious not least because, to get elected, Mr Morsi will need the support not just of the Brothers but also of the Salafists, a far more worrying band of Islamists who hark back to the puritanism of the Prophet Muhammad's era and who have amassed an alarming degree of popular support in the new Egypt.
Cancer charities have said secondary treatments should take place quickly - not only on medical grounds, but because this is an anxious time for patients.