What does “Heterogeneous” mean on a radiology report?
Uneven or mixed in appearance, as opposed to homogeneous (uniform). Used to describe texture, density or enhancement; it is a description, not a diagnosis.
How "Heterogeneous" is used in radiology reports
Heterogeneous means mixed or uneven. Its opposite is homogeneous, meaning uniform throughout. Radiologists use these words to describe texture and how evenly something takes up contrast: "heterogeneous echotexture" on ultrasound, "heterogeneous enhancement" on CT or MRI, "heterogeneous marrow signal" on spine MRI.
The word itself is purely descriptive. Many normal and benign things look heterogeneous — a fibroid uterus, a thyroid gland with several small nodules, a fatty liver that has patches of normal tissue, bone marrow in an older adult. Some significant findings are heterogeneous too, which is why the word is a clue that the radiologist combines with others rather than a conclusion in itself.
If it appears in your report, look for what it is attached to and what the Impression says about it. That summary is where the radiologist states what they think the appearance most likely represents and whether anything further is suggested.
It is also worth knowing that some organs are expected to look slightly uneven. Radiologists know the normal range of appearance for each organ, so if they use the word for something that looks as expected, they will usually make that clear — for example by describing it as mildly heterogeneous without any recommendation.
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General explanations of common wording, not advice about your own scan. Ask the doctor who ordered it what your results mean for you.
Does this mean something is wrong?
Not on its own. A radiology report describes what the images show, in language written for the doctor who ordered the scan. One term is rarely the whole picture — what it means for you depends on why you were scanned and what else the report says.
If the report worries you, the person who can actually answer that is the doctor who referred you. Understanding the words first usually makes that conversation a better one.
Want your whole report explained?
One term is a start. Radily reads your full report and explains it in plain English — and can talk you through it on video, so you are not reading medical language alone.
Other general terms
- AbnormalitySomething that deviates from what is normal or expected. In radiology, findings that differ from healthy tissue.
- AcuteRecent or sudden onset. Describes conditions that develop quickly (opposite of chronic).
- AerationThe presence of air in tissue or organs. Normal in lungs, abnormal in other locations.
- AspirationBreathing in foreign material (like food or liquid) into the lungs, or a procedure to remove fluid with a needle.
- BilateralOn both sides of the body.
- CentralLocated in the middle or center of a structure.
This explains a term as it is commonly used in radiology reports. It is not a diagnosis and not medical advice. Discuss your own results with your doctor.