Respected user, hi I evaluated your query thoroughly .
Sorry to hear about your issue .
@ Life span of such patient depends on many more factors as - immunity to
fight against invading pathogens - associated comorbid conditions as
heart issues,
diabetes ,
kidney problems etc - nutrition through food -
future behavior of
diverticulitis in body - habits any like
smoking / alcohol
other parameters according to the individual case .
@ So you can understand by this it is not simple as to utter a number for
his chances of survival randomly ; he may live further in this stage for
years together if the conditions favor him or else he may pass away
within days / months all are dependent on almighty God `s decision,
which we have to obey & follow by default .
Hope this clears your query .
Welcome for any further assistance.
Thanks for using Healthcaremagic.com & giving me an opportunity to assist
Wishing your brother a peaceful life ahead .
Regards dear take care .