Hi and thanks for the query,
I suggest he deserves a proper clinical evaluation. Blood in stool
deserves, especially when chronic in elderly men deserves exclusion of a tumour of the colon. A colonoscopy
and testing for occult blood in stool might be appropriate. Depending on whether its bright red or dark blood, we could have an idea of the source of the bleeding, whether upper gastrointestinal tract bleeding or lower tract infection. Stool examinations could help exclude to the possibility of amoebiasis
. A proper clinical evaluation to exclude peptic ulcer disease
, a fibroscopy could be useful. an abdominalultrasound could also be useful to evaluate the state of abdominal organs.
I suggest you consult an internist or gastrointestinal for a proper clinical evaluation.
Thanks and best regards,