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POST-ICTAL
The time period after a seizure.
POSTERIOR
Backside of something.
POSTERIOR ACOUSTIC ENHANCEMENT
An ultrasound finding where the tissue behind the mass is brighter than the mass. This is usually associated with a cyst (a pocket of fluid).
POSTERIOR ACOUSTIC SHADOWING
An ultrasound finding where the tissue behind the mass is darker than the mass. This can be seen with things such as calcification and solid masses. This is not seen with a cyst.
POSTERIOR CEREBRAL ARTERY
A large blood vessel that help deliver blood and nutrients to the back of the brain. There is a right and left posterior cerebral artery. It is often call the “PCA” for short.
POSTERIOR COMMUNICATING ARTERY
A small blood vessel in the brain.
POSTERIOR RIB
This is confusing terminology. A rib wraps around the chest on each side. It starts from the back and goes to the front of the chest. Posterior rib refers to the back part of the rib. The anterior rib, lateral rib and posterior rib are not separate structures. They are different parts of the same rib.
PRE-ORBITAL
The area in front of the eyeball. Think of your eyelid for example.
PROGESTERONE RECEPTOR (PR)
A receptor that can be associated with breast cancer. If a breast cancer has this receptor, there is a chance that hormone therapy can be part of the treatment for the breast cancer.
PROJECTS
Verb. It basically means that something "shows up" (in a certain location). It is used when something looks like it may be within the lung on a chest x-ray, but the radiologist is not completely sure. A chest x-ray report may say something like, "A 10 millimeter nodule projects over the right lung base." The 10 millimeter nodule may represent a small lung cancer. Alternatively, the 10 millimeter nodule may not be in the lung at all! It may represent a mole on the skin of the right lower chest or a right nipple shadow. Additional studies may be needed to find the right answer.
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