The patient is in the intensive care being treated for a subarachnoid
haemmorhage. There has been little bowel activity for several days and more
recently some diarrhoea. What is the differential diagnosis?
Pseudomembranous colitis Sigmoid volvulus
Obstruction due to incidental tumour at the recto-sigmoid junction
Constipation with overflow diarrhoea
Ischaemic colitis