Hi,
So it looks to be a thorax problem. Funny how some history things that don't sound significant suddenly are...
Ok, it is very difficult to explain what to do with the patient. However, i am going to assume you have a brain and you obviously must be smart because you are a physio!

. Therefore...
*Joints*
1. Assess the thoracic spine facet joints.
2. Assess the ribs joints anteriorly and posteriorly
3. Assess the C/S and L/S facet joints.
*Muscles*
1. Assess ALL the muscles that attach to the thorax/ribs/L/S and C/S.
2. Assess the thorax in relation to breathing and the pattern of breathing - look for the quality of breathing
3. Do certain muscles feel overactive or tight?
4. Do certain muscles feel underactive or flaccid?
5. Is there any asymmetry?
*Motor Control / Neural*
1. How is segmental motion during F/E/Rot/LF?
2. How do the patterns of muscle activation look?
3. How do they change when you change certain joints (like the lower ribs or sternum)
4. Does strength changes occur on isometric muscle testing without rib/sternum holding and with?
*Visceral system*
1. If you are not familiar with osteopathic visceral manipulation type stuff, don't worry.
*rationale*
1. irregular constipation - you often see this a lot when the sympathetic system is dysfunctional secondary to thoracic dysfunction. Go back and see how close the sympathetic tract is to the CV joints.
2. I don't know what intestinal TB is - sorry
3. Breathing better on sternum pressing - not sure what direction you did but assuming AP. By doing this, you have change fascial and articular relationships allowing a different movement pattern to occur. You need to reason out ALL the changes that have been made - was it articular or muscular? Was it pec major or pec minor? Was it at a certain level or it doesn't matter where you push. Don't forget that the obliques can be as high as rib 5 and go to the pelvis...
4. Left lower ribs "sticking out" indicates a dysfunction. It might be articular or myofascial (muscular). What is QL, erector spinae, multifidus, etc doing to those ribs? Are you able to get the patient to think of something (a cue) to activate the deep stabilisers at that level - try something like..."can you feel me sticking my finger in here (press on rib 11 CT joint)...can you think about pushing my finger out of this rib?" - to try get multifidus or something nearby - make it up, you won't hurt your patient by trying different cues.
Good luck. Experiment safely. Remember that this patient has had this a long time. The very fact that you pressed here or there and made them feel better is already alot more than a lot of other people have done (i am guessing of course!). Therefore, be up front, tell them that you need to explore a bit to find the best thing to help them and they should be patient.
Good luck!