Cholangiolitis is the medical term for inflammation
of the smallest bile
ducts, which are called cholangioles,
and are also known as "bile radicles".
(Recall that the suffix -itis usually indicates "inflammation"
of the part of the body referred to by the earlier part of the word. In
this case the prefix cholangio- refers to the cholangioles.)
Cholangiolitis may occur as a result of obstructions
to the cholangioles.
See also the (similar) term cholangitis,
whose meaning is slightly more general.