1."The woman who fielded his phone call put him in touch with D.r Bob Smith, a proctologist who had never found a cure for his own alcoholism. The two became fast friends."
A proctologist is a doctor who specializes in field of proctology. Proctology is the branch of medicine that deals with diseases and conditions that affect the colon, rectum and anus. (ehow)
2. "The post-surgery MRI revealed that the at-risk area was now perfused with blood, and functioning started to return."
–verb (used with object), -fused, -fus·ing.
to overspread with moisture, color, etc.; suffuse.
to diffuse (a liquid, color, etc.) through or over something.
leprosy hospital: a hospital for the treatment of patients with leprosy
Surgery . to pass (fluid) through blood vessels or the lymphatic system.
3. "Dr. Brand felt more at home in India than in England or in his new home, a leprosarium in Louisiana."
...his patients came from the Dalits (Untouchable caste), yet he knew them not as a class but as individuals."
Dal·it [ dlit ]
- member of oppressed Hindu class: in parts of South Asia, a member of a class regarded as below the four divisions within the traditional Hindu caste system