Common Ultrasound Report Terms Explained for Ajax Patients

More and more people now see their imaging reports before they speak to their doctor, through a patient portal, a copy mailed to them, or a printout handed over at a follow-up visit. That access is valuable. It also means reading a document that was written for a physician, in the compact technical language that radiologists use to describe images precisely.

An ultrasound report can be full of words that sound alarming out of context, such as “lesion,” “mass” or “heterogeneous,” alongside reassuring-sounding words that are actually quite neutral. This glossary explains common terms you might see on an ultrasound report from Rossland Diagnostic Clinic in Ajax or any other imaging provider, so the language itself is less of a barrier.

Please read it with one important limit in mind: a definition is not an interpretation. Knowing what “hypoechoic” means does not tell you what a particular hypoechoic area means for your health. Only the health-care provider who ordered your scan, who knows your history, symptoms and other test results, can tell you that. For how the report gets from the clinic to your provider in the first place, see our article on how imaging results reach your doctor.

How a report is usually organized

Before the vocabulary, it helps to know the layout. Most ultrasound reports follow a similar structure, though headings vary:

• Clinical history or indication. A short note of why the scan was ordered, usually taken from the requisition. For example, “right upper quadrant pain.”
• Technique. How the exam was done, such as “real-time grey-scale and colour Doppler imaging.”
• Comparison. Whether earlier studies were reviewed. “None available” simply means there was nothing previous to compare with.
• Findings. The detailed, organ-by-organ description. This is the longest section and contains most of the technical terms.
• Impression or conclusion. A brief summary of the most important points. If you only read one section, this is the one your provider will focus on, but it is still written for a clinician.

Words that describe how tissue looks on ultrasound

Ultrasound images are built from echoes, so many report terms describe how strongly a tissue reflects sound. These words describe appearance, not diagnosis.

Echogenic and echogenicity

“Echogenicity” is how bright something appears on the image. An “echogenic” area reflects a lot of sound and looks bright.

Hyperechoic, hypoechoic, isoechoic, anechoic

These compare brightness with the surrounding tissue:

• Hyperechoic: brighter than its surroundings.
• Hypoechoic: darker than its surroundings.
• Isoechoic: about the same brightness.
• Anechoic: black, with no internal echoes. This is typical of clear fluid.

Each of these can describe completely harmless structures. A simple fluid-filled cyst, for instance, is often anechoic.

Homogeneous and heterogeneous

“Homogeneous” means uniform in texture. “Heterogeneous” means the texture is mixed or uneven. Many normal organs have a fine, homogeneous texture, but “heterogeneous” on its own is a description, not a conclusion.

Shadowing and posterior enhancement

Some structures block sound, leaving a dark “acoustic shadow” behind them on the image. Stones and calcium often do this. “Posterior acoustic enhancement” is the opposite: a brighter area behind something that lets sound pass easily, typically fluid. These are clues the radiologist uses to work out what a structure is made of.

Words that describe a finding

Lesion

A broad, general term for any area that looks different from the surrounding tissue. It does not mean cancer, and it does not mean anything specific at all until it is further described.

Mass, nodule and focus

• Mass: a lump or space-occupying area. Again, a neutral descriptive word.
• Nodule: usually a smaller, rounded area. Thyroid nodules are a common example; our thyroid ultrasound article explains why they are looked at closely.
• Focus or foci: a tiny spot or spots.

Cyst: simple and complex

A cyst is a fluid-filled sac. A simple cyst has thin walls and clear fluid, and is very common in organs such as the kidneys and ovaries. A complex or complicated cyst has features such as internal echoes, thicker walls or divisions (called septations) that the radiologist describes in more detail. Your provider will explain whether any follow-up is suggested.

Solid

Something made of tissue rather than fluid. Solid does not mean harmful; many benign growths are solid.

Calcification, calculus and sludge

• Calcification: a deposit of calcium in tissue, often from past inflammation or simple ageing.
• Calculus (plural calculi): a stone, such as a gallstone or kidney stone. “Cholelithiasis” means gallstones; “nephrolithiasis” means kidney stones.
• Sludge: thickened material in the gallbladder, more like sediment than a stone.

Our article on kidney and gallbladder ultrasound explains what those organs’ scans look at.

Free fluid

Fluid sitting in a body space rather than inside an organ. A small amount can be normal in some locations, particularly the pelvis; the significance depends on the amount and context.

Words about size and shape

Measurements

Reports list sizes in centimetres (cm) or millimetres (mm), often in two or three dimensions, such as “1.2 x 0.8 x 0.9 cm.” A number on its own does not tell you whether something is normal; normal ranges depend on the organ, your age and your body size.

-megaly

The suffix “-megaly” means enlargement. Hepatomegaly is an enlarged liver; splenomegaly an enlarged spleen. Mild enlargement can have many causes, and your provider will interpret it in context.

Atrophy, thickening and dilatation

• Atrophy: smaller than expected.
• Wall thickening: an organ wall measuring thicker than usual. Note that a gallbladder that has emptied after a meal can look thickened, which is one reason fasting matters.
• Dilatation or dilated: widened, used for tubes and ducts such as bile ducts or the collecting system of the kidney.

Words about blood flow

Doppler ultrasound measures movement, which makes it useful for studying blood flow. You will see these terms often on vascular ultrasound reports.

• Doppler / colour Doppler: the technique of showing blood flow, often in colour on the screen.
• Vascularity: how much blood flow is seen in a structure.
• Patent: open, with blood flowing through. “The veins are patent” is a common, reassuring phrase.
• Compressible: veins that flatten under gentle pressure. Normal veins compress; this is part of checking for clots.
• Stenosis: narrowing of a vessel.
• Plaque: a build-up on an artery wall.
• Thrombus: a blood clot.
• Waveform and velocity: measurements of how blood moves, used to estimate narrowing.

Words about location and direction

Anatomical direction words cause a surprising amount of confusion:

• Right and left refer to your right and left, not the reader’s.
• Bilateral: both sides. Unilateral: one side.
• Anterior / posterior: front / back.
• Superior / inferior: above / below.
• Medial / lateral: toward the middle / toward the side.
• Proximal / distal: closer to / further from the centre of the body or the starting point of a structure.
• Subcentimetre: smaller than one centimetre.

Reassuring-sounding and uncertain-sounding phrases

Some of the most commonly misread words are not technical at all.

“Unremarkable” and “within normal limits”

These are good news in report language. “Unremarkable” means nothing of concern was noted. It is not an insult to your organ.

“Not visualized” and “limited study”

Sometimes part of an organ could not be seen clearly, often because of bowel gas, body shape, or difficulty with positioning. Phrases like “suboptimally visualized,” “obscured by bowel gas” or “limited by body habitus” describe the conditions of the scan, not a problem with you.

“Incidental finding”

Something noticed that is unrelated to the reason for the scan. Incidental findings are common and often harmless, but the report mentions them so your provider has the full picture.

“Clinical correlation recommended”

The radiologist is asking your provider to consider the finding alongside your symptoms, examination and other results. It is standard wording and does not on its own signal a problem.

“Follow-up suggested” or “recommend repeat in X months”

A suggestion for your provider about whether further imaging may be useful. Your provider decides whether and when that follow-up happens.

“Stable” and “interval change”

When earlier scans are available, the radiologist compares them. “Stable” means unchanged. “Interval change” means something is different since the previous study, which may be an improvement or otherwise.

Pregnancy report terms in brief

Obstetrical ultrasound reports have their own vocabulary. A few common terms:

• Gestational age: how far along the pregnancy is, by ultrasound measurements.
• EDD: estimated date of delivery.
• Biometry: the set of baby measurements, such as head, abdomen and thigh bone length.
• Placenta location (for example anterior or posterior) and amniotic fluid: routine descriptions included on many reports.

Whether your prenatal care is in Ajax or elsewhere in Durham Region, your midwife, family doctor or obstetrician will walk you through what these mean for your pregnancy.

How to use this glossary well

A few suggestions for Ajax patients before a follow-up appointment:

1. Read the impression, then mark the words you do not understand instead of searching each one online.
2. Bring the report or your list of words to your appointment and ask, “What does this mean for me?”
3. Avoid comparing your report with someone else’s. The same word can carry very different weight in different situations.
4. Ask what happens next, whether that is nothing at all, a repeat scan or a referral.

If anything on your report is worrying you and you cannot wait for your appointment, call your provider’s office. If you develop new or severe symptoms, such as sudden severe abdominal pain, chest pain or difficulty breathing, do not wait for a follow-up: call 911 or go to the nearest emergency department.

Booking your ultrasound

Patients from Ajax, Pickering, Whitby and across Durham Region come to us for general, obstetrical, musculoskeletal and vascular ultrasound. You can read more about these exams on our ultrasound services page. When you have a requisition, request an appointment or call 905-426-3111, and our team will be glad to help you prepare.