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                     http://en.wikipedia.org/wiki/Medical_slang

         Medical slang is the slang of doctors, nurses, paramedics and other hospital and medical staff. One part of medical slang is the use of technical-looking acronyms to describe patients, co-workers or situations, often facetiously, to other medical professionals

                       Alguns exemplos

NLPR- "no longer playing records" (dead)
C/C- "Cancel Christmas" (dead)
TBC- "total body crunch" -refers to multiple bone injuries.
TDS- "terminal deceleration syndrome" -refers to death as a result of a sudden stop such as falling to one's death.
DBI - "dirt bag index" - a number calculated by multiplying number of tattoos and missing teeth.
TTR - "tooth to tattoo ratio" or "tattoo to tooth ratio" - man analogue of DBI. Because of institutional variation in which ration the acronym represents, TTR is often only used in conversation where wider context can make the usage clear.