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Doctor insights on: Mri Without Contrast Show Symptomatic Tumor

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Non contrast MRI was clear. No tumor or other issues found. Should I request an MRI with contrast or would the non contrast show issues?

Non contrast MRI was clear. No tumor or other issues found. Should I request an MRI with contrast or would the non contrast show issues?

Whi MRI in first pal: You need to tell us about your general condition as to why was the MRI done in the first place? Contrast is often used but it only enhances to show a lesion better. Most serious abnormalities will show up on MRI even without the use of contrast. Yet if your symptoms persist, a repeat MRI with Contrast may be necessary. What was your main symptom to do a MRI??? ...Read more

Dr. Barbara Lavi
5 Doctors shared insights

Mri (Definition)

Mri or magnetic resonance imaging is one of the more recently developed imaging modalities available to physicians. It uses powerful magnets to generate images. There is no ionizing radiation which is a major advantage over many other modalities. Mri is the best imaging exam that we have for most soft tissue and joint related problems. There are radiologists ...Read more


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Would a non-contrast MRI show a tumor located on the skull? Are there limitations? Bony protrusion?

Would a non-contrast MRI show a tumor located on the skull? Are there limitations? Bony protrusion?

Depends: Depends on tumor. If there's a lot of calcium in the tumor then, contrast may not be needed to see it. If it's a meningioma then, contrast may not be necessary because of the Dural Tail sign seen on FLAIR images, however, contrast is generally given to PROVE it. But in other cases tumors may be hidden if small, no mass effect, and no contrast. Contrast always best if mass suspected. ...Read more

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Does a head MRI both with and without contrast show if there is a problem or tumor in the pituitary gland?

Does a head MRI both with and without contrast show if there is a problem or tumor in the pituitary gland?

Pituitary gland: Hi, yes, MRI is a very good imagining modality to evaluate posterior brain, but But MRI might not detect microadenomas that are smaller than 3 mm (about 1/8 inch) across, follow up imaging if there is any doubt could be helpful. ...Read more

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Would a brain MRI with and without contrast show problems with sinuses (cyst or tumors)or do they have to order MRI specifically for the sinuses?

Would a brain MRI with and without contrast show problems with sinuses (cyst or tumors)or do they have to order MRI specifically for the sinuses?

Sinuses: When you have a head scan either CT or MRI the radiologist will sometimes comment on sinuses. However, to take a complete look at the sinuses usually need a scan ordered specifically for that. ...Read more

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Would a Brain MRI W/O Contrast & a CT Scan with and W/O Contrast show a brain tumor causing symptoms? Worried that it could have been missed.

Would a Brain MRI W/O Contrast & a CT Scan with and W/O Contrast show a brain tumor causing symptoms? Worried that it could have been missed.

MRI: A MRI with contrast is sufficient to detect evidence of a brain tumor. If there is any question as to whether a brain tumor is present or not, one can opt to repeat the MRI of the brain with contrast three months after the last MRI brain was obtained. ...Read more

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Would a Brain MRI without Contrast & a CT Scan with and without Contrast show a brain tumor causing symptoms? Worried that it could have been missed.

Would a Brain MRI without Contrast & a CT Scan with and without Contrast show a brain tumor causing symptoms? Worried that it could have been missed.

No symptomatic tumor: It is a pretty safe bet that MRI together with contrast CT can exclude a symptomatic tumor (mass) in the head. That does not mean all causes of headache or neurologic complaint are seen. Only your practitioner can give more advice to "put your mind at ease" and further direct your diagnostic journey. ...Read more

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Does MRI abd/pelv without contrast find evidence of most tumors?

Does MRI abd/pelv without contrast find evidence of most tumors?

Frequently: MRI if abdomen/ pelvis frequently identify most existing neoplasms but can miss the presence of one, especially if metastatic from a more distant site. We therefore employ PET/CAT to evaluate entire site especially for a hidden primary in the face of metastasis. If multiple liver lesions present, PET can identify which might be hemangiomas and determine approach to be used for management. ...Read more

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Will mRI with contrast catch even the most hidden tumor, even the smallest?

Will mRI with contrast catch even the most hidden tumor, even the smallest?

No, of course not: There will always be something too small to be seen by any type of machine. However, when things are too small to be seen, nobody knows what happens to those things over time. As the machines and the scientific research improves over time, we will know more. ...Read more

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Would a spinal Tumor on an MRI show as a tumor or would it show as an abnormality? Thankyou

Would a spinal Tumor on an MRI show as a tumor or would it show as an abnormality? Thankyou

It depends: Sometimes the tumors are so subtle that you cannot be certain. Many of the time the tumors will light up with contrast in which case you can be much more certain that it is tumor. But sometimes it is simply hard to tell and only biopsy will tell you if you have tumor which should be done only as a last resort because biopsying the spinal cord is fraught with danger. ...Read more

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Hi docs, would a TMJ MRI show tumors in other parts of the head?

Hi docs, would a TMJ MRI show tumors in other parts of the head?

Yes: With a TMJ MRI you see the joint and surrounding structures. Not the entire head, but the area around the joint. ...Read more

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Help please! Is an MRI with contrast necessary to diagnose brain lesions or tumors?

Help please! Is an MRI with contrast necessary to diagnose brain lesions or tumors?

Highly: Recommended to give contrast when evaluating for brain tumors, demyelinating disease, and other diseases too numerous to describe here. ...Read more

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Would a spinal Tumor show on an MRI scan?

Usually: Sometimes a spinal cord tumor, especially with extrinsic compression, can result in false localizing clinical signs, which could result in imaging at wrong level, but if precise, the MRI will show lesion. However, you say that you have B-12 issues, and this can cause spinal cord problems in posterior columns, which are also seen on MRI. Do you feel Concierge visit might help? ...Read more

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What does back pain feel like if you have cancer? I have had MRI didn't show any mass or tumors

Constant: Constant that is not influenced by position of the legs. Usually described as biting or sharp; not electric or shooting. ...Read more

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What are the chances of an MRI w/ contrast picking up something (such as a brain tumor?) that a regular MRI could not?

What are the chances of an MRI w/ contrast picking up something (such as a brain tumor?) that a regular MRI could not?

Better: Contrast improves the ability to see most brain tumors. However, this is not the case with all of them. ...Read more

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A MRI without dye show a brain tumor?

A MRI without dye show a brain tumor?

Yes: Yes a non-contrast MRI is pretty good for detecting a tumor in the brain, but using contrast "dye" improves the ability of an MRI to detect a small tumor. ...Read more

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Could a brain tumor be missed on an MRI with contrast I hade 8 months ago?

Could a brain tumor be missed on an MRI with contrast I hade 8 months ago?

Any symptoms?: Do you have any symptoms? Any test can have false negative results. Unneeded tests can produce false positive results.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex.
Get HPV vaccine ...Read more

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I have been diagnosed with hyperprolactinemia. Serum level of 97.9.My MRI does not show a tumor. What other things can cause this.?

I have been diagnosed with hyperprolactinemia. Serum level of 97.9.My MRI does not show a tumor. What other things can cause this.?

A tumor: You may still have a little one in your pituitary that isn't showing on mri. I suspect that these underlying most cases of "hypothalamic-pituitary dysregulation" as I've found them at autopsy in people who have no idea. Trusting you're healthy otherwise ; not on meds or overstressed; many women with polycystic ovary disease run a somewhat high prolactin. Treatment (if you need it) may be empirical. ...Read more

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Could a MRI with contrast fail to identify a pituitary tumor?

Could a MRI with contrast fail to identify a pituitary tumor?

Yes: Most pituitary tumors are "microadenomas", meaning that they are less than 1 CM in size. Mris done specifically to look for a pituitary tumor are very good at detecting tumors near 1 CM in size, and identify about 50% of tumors in the 0.3 CM size range, and would miss most tumors smaller than this. ...Read more

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Can you tell me how fast do brain tumors develope - and show up on mri?

Can you tell me how fast do brain tumors develope - and show up on mri?

MRI is reliable: Brain tumor can be easily seen on a MRI of the brain. Like many cancers, these tumors evolve slowly, possibly over a period of many years, yet it is hard to pin down exact time frames. ...Read more

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Would an MRI scan on the coccyx for tailbone pain show if there was some sort of tumor causing the pain?

Would an MRI scan on the coccyx for tailbone pain show if there was some sort of tumor causing the pain?

More than likely: But why would you have a tumor on your coccyx? A rather unusual reason for coccygeal pain in a 29 year old woman. Keep in mind that common things happen commonly. A plain x-ray would be a better first imaging study especially if there was an injury. ...Read more

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An MRI should show if it was a tumor or something else on my head. Is that correct? What about epilepsy?

An MRI should show if it was a tumor or something else on my head. Is that correct? What about epilepsy?

An MRI is: Very sensitive for detecting brain tumors. If you have epilepsy, the MRI may or may not show signs. For seizure work up, special sequences may be performed in addition to the standard brain MRI. ...Read more

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Can MRI with contrast miss brain tumor?

Can MRI with contrast miss brain tumor?

Best test: An MRI with contrast is the best test to detect a brain tumor. If the MRI did not detect a brain tumor then it is likely either too small to see or there is no brain tumor. ...Read more

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If you had an eye tumor would it show on a brain MRI scan?

If you had an eye tumor would it show on a brain MRI scan?

Depends on size, loc: MRI's limited resolution in "standard" view can miss tumors <1 cm in size. Dedicated MRI of the orbits (eyes) can see tumors that are ~0.2 cm in size, but require a special order to perform. Also, the tumors show up in a way that can be confused with normal vitreous fluid in the eye, so often dye is needed, depending on location. Talk to an ophthalmologist about symptoms 2 c if MRI order's correct ...Read more

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If a blood clot is covering a tumor, would it mask the tumor's presence on an MRI with contrast?

Unlikely: One can tell a vessel from a tumor. I find it hard to believe that one would mistake a clot for a tumor on mri. ...Read more

Neoplasms (Definition)

"tumor" literally translates as "mass", so even a fresh bruise could be called a "tumor". Doctors use the term "neoplasm" (tranlates literally as new growth) to describe tumors that are abnormal growths of cells. These may be benign or malignant; "malignant" = cancer. In everyday usage, we use "tumor" ...Read more