Ultrasound Abdomen Report Words: Echogenicity, Calculus, KUB

An ultrasound whole abdomen report describes each organ in turn, liver, gallbladder, pancreas, spleen, kidneys, bladder and pelvis, and most of its words mean “looks normal” once you know them. This glossary goes in the order your report is printed, flags the phrases that need a doctor the same day, and explains why two centres can write different things about the same belly.

Radiology reports are written for doctors, so “cortico-medullary differentiation maintained” lands on a patient like a threat. It’s actually good news. Really. Most of the scary-sounding lines are routine housekeeping that a radiologist writes on every normal scan, and the few lines that genuinely matter tend to be short, plain and easy to miss, which is exactly why it’s worth knowing them.

KUB vs whole abdomen ultrasound: which one did you have?

KUB stands for kidneys, ureters and bladder. It’s a focused scan, often ordered for stone pain, urine infections that keep coming back, blood in the urine or prostate symptoms such as a weak stream and getting up at night. In men it usually adds the prostate, in women the pelvis may be glanced at, and in some hospitals “KUB” means a plain X-ray rather than an ultrasound, so check the heading at the top of your report before you read anything else. Heading first.

Whole abdomen covers everything above plus liver, gallbladder, bile ducts, pancreas, spleen, aorta and, in women, uterus and ovaries. It’s the common scan for upper belly pain, raised liver tests or a general check.

Why fasting and a full bladder change the report

1. Fast for about 6 hours before a whole abdomen scan (8 for some centres). Food makes the gallbladder squeeze empty, and an empty, shrunken gallbladder hides small stones and makes the wall look falsely thick, so a scan done after breakfast can raise a worry that a fasting scan would never have raised.
2. Water is usually allowed. Skip fizzy drinks and chewing gum, which add gas.
3. Arrive with a comfortably full bladder: drink about 4 to 5 glasses (roughly 1 litre) of water around an hour before and don’t pass urine. Why? A full bladder lifts the bowel out of the way and lets the pelvis show.
4. For a “pre and post void” scan you’ll be scanned full, asked to empty, then scanned again.
5. Carry old reports and scans. Comparison is often the most useful line in a report.

Sound waves bounce off gas and fade through fat, so a gassy bowel or a bigger body can hide parts of the pancreas or ovaries. That’s one honest reason two centres differ. Here’s another. The other is that ultrasound depends on the operator’s hands and eyes more than CT or MRI do.

Liver lines on the report

• “Liver normal in size, shape and echotexture”: normal. Adult liver span is often quoted around 13 to 16 cm, but body size changes it, and your report’s own comment on size is what counts.
• “Hepatomegaly”: the liver measures larger than expected. Covered in what hepatomegaly with fatty liver means.
• “Raised” or “increased echogenicity”: the liver looks brighter than usual, most often from fat. The grade (1, 2, 3) and what it means live in fatty liver grades explained, so we won’t repeat them here.
• “Coarse echotexture” or “irregular surface”: the liver tissue looks uneven. Show your doctor soon.
• “Focal lesion” or “SOL” (space-occupying lesion): a spot that looks different. Many are harmless (simple cysts, haemangiomas), but any mention of a lesion, even one the radiologist calls “likely benign”, needs follow-up with your doctor rather than a wait-and-see at home.
• “CBD” (common bile duct) with a size: commonly under about 6 mm in adults; a “dilated” duct is flagged for a doctor.

Gallbladder, pancreas and spleen

• “Calculus” or “calculi”: stone or stones. Size and whether they move are noted.
• “Sludge”: thick bile, often after fasting, pregnancy or illness.
• “Wall thickness” with a number: a normal wall is usually under about 3 mm. A thick wall with pain and fever is a same-day finding.
• “Contracted gallbladder”: often just means you ate before the scan. Rescan fasting.
• “Pancreas partly obscured by bowel gas”: very common and usually not a problem. The scan simply couldn’t see through the gas.
• “Spleen normal” or a length: adult spleen is commonly up to about 12 to 13 cm. “Splenomegaly” means enlarged and is followed up with blood tests.

Kidney lines, and what KUB report words mean

Adult kidneys usually measure around 9 to 12 cm long. Stone sizes, what size tends to pass, and the drinking plan belong to our kidney stone water and diet guide; the warning signs are in kidney stone emergency signs.

Bladder, prostate, uterus and ovaries

• “Pre-void and post-void volume” (PVR): how much urine stays after emptying. Small amounts are normal; a large leftover volume, often above roughly 100 ml in adults, is flagged for review.
• “Bladder wall thickened” or “trabeculated”: the muscle may be working hard, sometimes from prostate enlargement.
• “Prostate volume” in ml or grams: the size; enlargement is common with age and is read with symptoms.
• “Endometrial thickness”: the womb lining, which changes through the monthly cycle, so the day of your cycle matters.
• “Follicles” or “polycystic appearance”: the look of the ovaries. Appearance alone doesn’t diagnose anything.
• “No free fluid”: no loose fluid in the belly. That’s the line you want to see.

Did you know?

• Ultrasound uses sound waves, not radiation, which is why it’s the first scan in pregnancy.
• The cold gel is there to push out air: sound barely crosses even a thin layer of air between probe and skin.
• “Echogenic” simply means “sends back lots of echoes”, which the screen shows as brighter.

Myth: a normal ultrasound means nothing is wrong

A normal scan is reassuring. It isn’t a guarantee. Ultrasound can miss small stones in the ureters, early changes in the pancreas, and anything hidden behind gas. It also says nothing about how organs work, only how they look, so if symptoms continue your doctor may add blood tests, a urine test or another type of scan such as CT. The reverse myth is common too: an “abnormal” word such as a simple cyst or mild fatty change is often harmless.

Questions to ask your doctor about the scan

• Which lines on this report are normal, and which need follow-up?
• Was anything not seen well, because of gas or fasting?
• Do I need a repeat scan, and when, at the same centre?
• Does this finding need blood or urine tests with it?
• Does “clinical correlation” mean you need to examine me, or another scan?

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