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HILAR PROMINENCE
Increased whiteness in the hilar region on a chest x-ray, commonly due to hilar adenopathy.
HILUM (pleural – hila, adjective – hilar)
The point where the mediastinum connects to the lung. This is located roughly at the mid level of the chest. There is one hilum on each side of the mediastinum (right hilum and left hilum). Blood vessels and air tubes from the mediastinum enter the lungs through the hilum. Usually, there are small lymph nodes at the hilum.
HINDFOOT
Back part of the foot toward the ankle.
HOMOGENEOUS
A uniform or consistent appearance. Is the opposite of heterogeneous
HORNER’S SYNDROME
A syndrome that shows up as a combination of drooping of the eyelid and "pinpoint" pupil on the same side. Sometimes, there can be decreased sweating on half of the face (on the same side as the other symptoms).
HUMERUS
Long bone in the upper arm.
HYDROCEPHALUS
Literally refers to “water brain”. It is an abnormality related to too much water, or “CSF”. There are two type of hydrocephalus: communicating and non-communicating. Communicating hydrocephalus is also called NPH, or “normal pressure hydrocephalus”. Non-communicating is related to obstruction in the absorption of CSF and can be related to infection, inflammation, trauma, tumor, and congenital.
HYDRONEPHROSIS
"Tubes" draining urine from kidney are dilated. It can be from obstruction, which means something is blocking the "tube". It can also simply be due to reflux, which means urine is flowing backwards into the "tube" from the bladder.
HYDROPNEUMOTHORAX
An "air leak" in the lung PLUS fluid in the chest (pleural) cavity on the same side.
HYDROURETER
Dilation (i.e. ballooning) of tubes that drain urine from the kidneys to the bladder.
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