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Doctor insights on: When Is A Kidney Cyst Ct Number Cancer

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I have a result of renal tract CT, with 3cm exophytic mass arising from the upper pole of L kidney which looks like a cyst, is this cancer??

I have a result of renal tract CT, with 3cm exophytic mass arising from the upper pole of L kidney which looks like a cyst, is this cancer??

Maybe yes maybe no: If it's truly a cystic lesion and then I will be benign however there are cystic cancers of the kidney the more cystic component has the more likely it is benign let's hope it's a simple retention cyst with just fluid the ultrasound should help determine whether this is fluid maybe you should have a follow-up ultrasound after the CT scan ...Read more

Dr. Barry Rosen
4,351 Doctors shared insights

Cancer (Definition)

Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more


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Ct of kidneys, MRI and plain xray of lumb spine, all normal. Still have low back pain. On initial pl xray 2.4x2.1mm cyst was on rt ovary. Cld be cancer?

Ct of kidneys, MRI and plain xray of lumb spine, all normal. Still have low back pain. On initial pl xray 2.4x2.1mm cyst was on rt ovary. Cld be cancer?

Unlikely: Cancer is pretty low down the list of possibilities. The ovarian cyst is a common and normal finding and it is really unlikely that it has anything to do with your low back pain. Low back pain is a very nonspecific symptom with numerous causes, so it may take a while to figure it out. ...Read more

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What are the signs that complex kidney cyst is cancer?

What are the signs that complex kidney cyst is cancer?

Multiple features: Complex cysts, vs. Simple cysts, share common walls with other cysts, have solid components in the walls, or calcifications.

The radiologist will opine if features look suspicious and either recommend a repeat ultrasound in 6 months, or a ct to further clarify. ...Read more

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Which is safer for a child- MRI under deep sedation, or low-dose CT scan with no sedation? This is to evaluate complex kidney cyst.

Which is safer for a child- MRI under deep sedation, or low-dose CT scan with no sedation? This is to evaluate complex kidney cyst.

It depends: The best study really depends on what the doctor is trying to evaluate. Certainly having no sedation may be safer than a procedure with sedation, but may not give as accurate a picture of the kidneys. Children are frequently sedated for imaging procedures because excessive movement will make the study unreadable. ...Read more

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Ct shows complex kidney cyst is 6cm is iif. But my dr wants another CT in dec I can't have MRI as I have brain clip. Should I wait?

Ct shows complex kidney cyst is 6cm is iif. But my dr wants another CT in dec I can't have MRI as I have brain clip. Should I wait?

Too little info: Not stated what "iif" means. Cannot say but good quality ultrasound (make sure you see, understand & keep copies of the images) generally works quite well/better, is safer, less expensive & the metal of the vascular clip is not a problem. Keep in mind your primary-medical-decision-maker/the-one-who-lives with-results-of-all-decisions/actions; no one else has same vested interest. ...Read more

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11cm complex (BF2) kidney cyst drained & sclerotherapy 2 months ago - bad back pain - CT now shows 4 CM complex cyst could this cause so much pain?

11cm complex (BF2) kidney cyst drained & sclerotherapy 2 months ago - bad back pain - CT now shows 4 CM complex cyst could this cause so much pain?

Here are some. ..: For such sequential follow-up concern after percutaneous Rx, it's logical to direct it to the treating Doc. But in a sense, the CT before & after Rx seems suggesting favorable outcome thus far. It requires a longer time to decide the clinical fate of this treated complex cyst - requiring cryo or RF-ablation or just watch. Does it cause pain? More analysis is needed; so seek pro-revaluation timely ...Read more

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Child has elevated AST liver enzyme (1st test 58, 2nd test 43). Dr says no worry. Also has complex kidney cyst. Is it a sign of cancer spread 2 liver?

Child has elevated AST liver enzyme (1st test 58, 2nd test 43). Dr says no worry. Also has complex kidney cyst. Is it a sign of cancer spread 2 liver?

Return To Doctor: Child's age/details of Kidney disorder unknown. Liver enzymes (AST, ALT) elevate with liver cell damage however AST elevations can also come from anomalies in other organs, (eg. Heart, kidneys & more) & does not point specifically to liver. Your child's AST's are very mildly elevated. With so little info given, suggest you see doctor to discuss cancer fears & to better understand child's condition ...Read more

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If a 1cm complex kidney cyst has been stable in size for 4 months, what are the chances it is cancer and is it possible for it to spread at this size?

If a 1cm complex kidney cyst has been stable in size for 4 months, what are the chances it is cancer and is it possible for it to spread at this size?

Renal cyst: The fact that it is small and stable after 4 months is a good sign. However another renal ultrasound should be done in 6 months to look for growth or change in structure. There is an increased risk of malignancy with a complex cyst and it should be watched closely ...Read more

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New spot found on liver thru ct. Early bt show increase liver enzymes. Us show fullness kidney & cyst on gallbladder. What does this mean?

New spot found on liver thru ct. Early bt show increase liver enzymes. Us show fullness kidney & cyst on gallbladder. What does this mean?

Hard to say: Have you had a colonoscopy? It is hard to say what the spot on your liver is without looking at your films... This could be a simple cyst, but if it is new, it could be a colon cancer (or other kind of tumor). You need a proper exam, including a colonoscopy if you haven't had one yet. If that is negative, it may require a biopsy. ...Read more

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Hi can doctors tell the difference between a cyst and a tumor on the kidney's just by looking at a CT scan?

Hi can doctors tell the difference between a cyst and a tumor on the kidney's just by looking at a CT scan?

Usually: Simple cysts of the kidney are common and most of them can be identified as such by radiologists with certainty. If there's a question, it's often a simple matter to sample the tissue with a needle. Likewise, dangerous tumors won't be mistaken for common cysts. ...Read more

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Chances of having retroperitoneal cancer at 20? Dr said mass- looks like cyst on CT is benign but I’m still worried

Chances of having retroperitoneal cancer at 20? Dr said mass- looks like cyst on CT is benign but I’m still worried

Cancer anxiety: You may consider a second opinion. However tumours are a rarity and your dr would have done a detailed evaluation of the growth looking at its form; position and relationship to other organs as well as various blood markers. I am not sure if this was looked at under a microscope by a pathologists, but they usually are depending on what is seen. Medicine has progressed a long way. ...Read more

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I was referred to a specialist after a cyst was found on a ct scan but I don't know if its cancer. What are the chances that it is?

I was referred to a specialist after a cyst was found on a ct scan but I don't know if its cancer. What are the chances that it is?

It depends: On the characteristics of the cyst and where it is located. If it is an uncomplicated cyst on the CT, likelihood of malignancy very very low. ...Read more

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Is 776ggt level cancer levels in liver? Swollen spleen n cyst n left kidney...which of these is the most dangerous and should be treated first?

Is 776ggt level cancer levels in liver? Swollen spleen n cyst n left kidney...which of these is the most dangerous and should be treated first?

Depends.: In order to make a good judgment here, we would need to see the actual lab test results and the ultrasound or CT scan results. If you would like to consult us on Healthtap Prime, one of us can try to help you. Good luck. ...Read more

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High attenuation cyst on kidney, approximately 3cm. Erthryopoietin elevated and WBC, RBC and hemaocrit elevated though not drastically. Cancer?

High attenuation cyst on kidney, approximately 3cm. Erthryopoietin elevated and WBC, RBC and hemaocrit elevated though not drastically. Cancer?

Bright cyst on ct: Usually a high attenuating cyst means the cyst is bright on a CT scan. While malignancy is in the differential diagnosis there are benign causes as well, such as a hemorrhagic cyst (a cyst with blood in it). Usually such findings are followed up with additional imaging studies for better characterization and interval growth before proceeding to biopsy or resection. ...Read more

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Arachnoid cyst found in CT. Was told this was common and typically found incidentally. Does this develop to cancer? Size of a quarter. Does it grow?

Arachnoid cyst found in CT. Was told this was common and typically found incidentally. Does this develop to cancer? Size of a quarter. Does it grow?

CanGrow ButNotCancer: Most Arachnoid Cysts are asymptomatic and are left alone. In cases where symptoms occur like Headaches, Seizures and abnormal accumulation of excessive cerebrospinal fluid in the brain called Hydrocephalus are common. Yes it can grow bigger but the rate of growth is rather slow. It does not develop in Cancer ...Read more

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What is a questionable punctate calcific density in the kidney, CT report says that. Also what is a 1.2 CM probable cyst in the lower pole of kidney?

What is a questionable punctate calcific density in the kidney, CT report says that. Also what is a 1.2 CM probable cyst in the lower pole of kidney?

Kidney abnormalities: "calcific densities" in the kidneys usually represent calcifications or stones, depending on any other associated findings they may have mentioned. Sometimes kidney tumorsay calcify, but they would have mentioned any finding concerning for this. Cysts are very common, and if they meet certain well defined criteria (bozniak classification), they are usually benign and need no further follow up. ...Read more

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I had a CT done that showed a low-density lesion upper pole and lower pole on right kidney. Likely a cyst. What does that mean? What should I do?

I had a CT done that showed a low-density lesion upper pole and lower pole on right kidney. Likely a cyst. What does that mean? What should I do?

Cysts in the kidney: All of us will develop benign cysts in the kidneys with age. 2 cysts are of no concern. They may cause microscopic blood in the urine otherwise harmless. We usually repeat the Ultrasound annually for 2 years and if there's not much change in the size, number, and look (or complexity) of the cysts, then we repeat ultrasound every 2 years, that's all you need to do! ...Read more

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Does a CT scan that shows dialation in one of the kidneys mean cancer?

Does a CT scan that shows dialation in one of the kidneys mean cancer?

Not necessarily: Dilation is a reflection of obstruction which may be due to a cancer or a benign tumor/polyp, a small stone, or a scarring of ureter. ...Read more

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Read that most liver and kidney cysts appear in people over age 50, so why do I have them at age 35?? (found incidentally on CT scan)

Read that most liver and kidney cysts appear in people over age 50, so why do I have them at age 35?? (found incidentally on CT scan)

Who knows?: These are one of the minor mysteries of medicine. When they occur together at a young age, I've thought perhaps it's a minor variant at the genetic locus for polycystic kidney disease (which often features liver cysts). It's not worth even thinking about. Older folks get more kidney cysts because of vascular changes (maybe) and mutations (maybe). Or it could be dumb luck. Don't worry about it. ...Read more

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I took ultra sound and CT scan for both kidney and prostate few weeks ago. I have some cyst in kidney and bigger than normal adult size of prostate.

I took ultra sound and CT scan for both kidney and prostate few weeks ago. I have some cyst in kidney and bigger than normal adult size of prostate.

No big deal: Simple kidney cysts are very very common and benign. Prostate enlargement is also unfortunately very common. It can cause urinary symptoms. If it gets bad enough, you can take certain medicines or have surgery but hopefully that will be many years away. ...Read more

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Enhanced CT kidney 2.7x2cm homogeneous mass arising close hilum left kidney predominantly low density rising from 33HU to 62 on enhancement. Cancer?

See Nephrology: The information given is from part of a CT scan. There is more information needed to answer your question.
See the ordering physician for next steps in your medical care.
The specialist that works in this area is called a Nephrologist. Or Kidney doctor. ...Read more

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Why would a child develop a 1cm complex kidney cyst? Why did specialist say it's OK to just follow on u/s if it is truly complex? No MRI or CT needed?

Why would a child develop a 1cm complex kidney cyst? Why did specialist say it's OK to just follow on u/s if it is truly complex? No MRI or CT needed?

Here are some. ..: Doctors are right & reasonable in advising you so as described. Facts: All medical care are based on indirect evidence resulting from continual collection & analysis from available experience so to make reasonable advice. As a result, the advice may constantly evolve and change over time. So, up to currently what we have known, it's ok to follow it as advised. Ask Doc timely for detail if more... ...Read more

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What is a t1 htperintense right lower pole renal lesion most likely 1cm complex cyst scanhave repeat 6mths. Kidney cancer runs family Could be cancer?

What is a t1 htperintense right lower pole renal lesion most likely 1cm complex cyst scanhave repeat 6mths. Kidney cancer runs family Could be cancer?

Cyst in kidney: Right now the 1 cm cyst looks pretty small and benign. However it could turn into something solid or can get larger. 6 months is a good time to repeat it. If it looks the same in 6 months then it probably is not malignant or even if it is a cancer, it probably is slow growing and less likely to be aggressive. ...Read more

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Can there be a cyst and a exophytic solid mass lesion on a kidney? Are the thge same? Does the solid mass indicate cancer?

Need followup: Renal cysts are common. The majority are benign. Cysts can also be assoicated with malignancies and some malignancies have cystic areas. A solid exophytic mass may be more worrisome.
YOu need a further workup and you may need a biopsy or surrgical resection to know for sure. Discuss imaging and surgical options with your doctors. ...Read more

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CT w/ contrast in March 2014 that showed 9mm cyst in each kidney. Had CT w/o contrast in Nov that says kidneys unremarkable. Can no contrast show cysts?

Possibly not: Due to various exposure factors and size of the patient, a CT without contrast may not reveal cysts, especially if they do not distort the adjacent structures or project beyond the kidney margins. ...Read more

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Can a CT show difference between ovarian cyst and ovarian cancer?

Can a CT show difference between ovarian cyst and ovarian cancer?

Depends.: A cystic ovarian lesion can be a benign cyst or a cystic neoplasm. Even a benign cyst can be difficult to diagnose on ct if it has blood (hemorrhagic) or debris inside it. A ct may not be able to discern a hemorrhagic cyst from a solid tumor. A cyst with a growth along its wall may be suspicious. An ultrasound may be useful. Short term follow may tell if the cyst resolve/improve. ...Read more

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Does a CT show a difference between ovarian cyst and ovarian cancer?

Does a CT show a difference between ovarian cyst and ovarian cancer?

Ovarian cancer: A ct of the abdomen and pelvis can give clues but surgery gives the only answers. In general, ovarian cancers are larger, more complex, often involve the omentum and lymph nodes. Ascites (excessive fluid in the abdomen) is often seen on ct also. ...Read more

Computed Tomography (Definition)

Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! The image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more


Cyst (Definition)

A cyst is a structure or mass that consists of a cellular lined sac. It is typically filled with fluid but may be filled with solid material. It can be congenital, traumatic, or acquired. They may develop nearly anywhere in the body and usually require complete excision for eradication or they are likely to recur. Fluid filled sacs that are not cellular lined ...Read more