Oesophagus:

Esophagitis is a general term for any
inflammation, irritation, or swelling of
the esophagus, the tube that leads
from the back of the mouth to the
stomach.



PHOTODYNAMIC THERAPY (PDT)       
           
The cells are exposed to a
light-sensitive drug and then killed off
using a special laser.
Since just the lining of the oesophagus
has changed, it makes far more sense
to remove this top layer rather than the
whole  oesophagus as it was done
earlier with the surgery.