I know you are concerned about your brother, probably more than he
is about himself. My Dad was an alcoholic and his health was the last
thing on his mind. He wound up paralyzed after walking out in front
of a truck while intoxicated. He lived 11 years in a nursing home and
died at age 73.
It sounds like your brother may need further tests to reveal whats
causing this stricture. Its always best to seek a second opinion before
major surgery of any kind, if time permits. Losing a lot of weight can be
a sign of a very serious condition, possibly cancer.
I have lived with diverticulosis for years and it can get real painful
if it progresses to diverticulitis, which is a serious infection causing
pain, cramping and sickness. Since this can be hereditary, (my Mom and
both my brothers have it) you may want to get checked yourself. Lemme
know how your brother is doing, okay? Mel