Letter H
HYPOVENTILATORY CHANGES
Abnormal appearance of the lungs on a chest x-ray caused by taking a shallow breath (less than full inspiration). This goes away when the patient takes a deep breath.
HYPOINTENSE
An MRI term used to describe organ tissue that looks dark rather than bright. Often the term is followed by the sequence used. For example, your report may state “hypointense T2 signal”. This means that the tissue looks dark on T2 sequences.
HYPOINFLATION OF THE LUNGS
Less than full inspiration. This can lead to hypoventilatory changes of the lungs on a chest x-ray.
HYPOECHOIC
Appears dark on ultrasound. This can help Radiologists characterize the abnormality on ultrasound.
HYPODENSE
Appears dark on CT. This can help Radiologists characterize the abnormality on CT.
HYPOATTENUATING
Appears dark on CT. This can help Radiologists characterize the abnormality on CT.
HYPERTROPHY
Thickening of a structure (usually muscle) and considered abnormal. To enlarge or get big.
HYPERTENSIVE HEMORRHAGE
Refers to stroke that has bled as a result of high blood pressure or hypertension.
HYPERPLASIA
Something that is growing faster or bigger than normal.
HYPEROSTOSIS FRONTALIS INTERNA
Extra bone growth in the front part of the skull. This is not cancerous.
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