I saw this mentioned in the encounters and forgot to reply. As a public service announcement:
The taut belly is likeley ascites or fluid accumulation in the abdomen. There are several possible causes - alcoholisn - but severe liver problems (cirrhosis) related to chronic hep B and chronic hep C are also high possibilities. TB is less likeley cause. For liver problems, also look for excessive bruising, red palms or unusual blood vessels at surface of the skin.
Jaundice often accompanies liver problems. Jaundice is a little harder to read in Asians. Yellow in eyeballs whites is fairly indicative. Jaundice under the tongue is pretty conclusive, but I dont know how you can observe that.
Sorry to bring this up, but if you see the taut belly on a 50 year old, you may be putting yourself at high risk.