Medical professionals may refer to different parts of the body using abbreviations too.
ABD - abdomen
AD - right ear
AL - left ear
AU - both ears
BMD - bone mass density
BMI - body mass index
BMR - basal metabolic rate
CBD - common bile duct
CBF - cerebral blood flow
FL - femur length
FROM - free range of motion
HC - head circumference
IBW - ideal body weight
LLL - left lower lobe
LLQ - left lower quadrant
LUL - left upper lobe
LUQ - left upper quadrant
LV - left ventricle
OD - right eye
OS - left eye
OU - both eyes
PNS - peripheral nervous system
RA - right atrium
RUL - right upper lobe
RUQ - right upper quadrant
RV - right ventricle, residual volume
TLC - total lung capacity
UE - upper extremity
WT - weight
Ctto : https://abbreviations.yourdictionary.com/articles/medical-abbrev.html