Can they tell if a breast tumor is cancerous on a ultrsound? He said it may be a adenoma. I'm waiting on a biopsy. Whats the likelyhood of cancer?

Imaging does. Not tell histology -- what it looks like under the microscope. There are certain imaging findings, such as filled with notvery complex fluid, that points to benignancy.
Need a biopsy. However, breast tumors that are quite round without projections are much more likely to be benign fibroadenomas than something nasty. You still need to have the tumor, or a bit of it, sent to the pathologist. I hope that regardless of the diagnosis that you get a good outcome, and if it is benign, that you continue surveillance.

Related Questions

I've got a breast tumor. Had a ultrasound. Now waiting on biopsy. He said it probably was a adenoma. I've got one on my pituitary gland also. Cancer?

Ubknown. I would need much more information. A breast "adenoma" is probably meant to be a benign (non-cancerous) fibroadenoma ; would not be related to a pituitary adenoma. The biopsy will give you the information you need. Read more...
Likely these. Are unrelated...Pituitary adenomas are less common and more interesting -- can make hormones or cause "pressure"...No one can tell breast lesions until they are biopsied, but u/s gives much better clues than mammo's. Read more...

Thanx in advance ur all a blessing, what can be found in a punch biopsy, doc thinks tumor in back is my breast cancer spreading?

Tissue diagnosis. Hopefully the "punch" biopsy will obtain enough cells to identify the source of the tumor on your back and I pray that it isn't a return of your breast cancer in a distant place. A Pathology doctor will look at those cells under the microscope and give your MD an answer.(and in turn you as well.) Read more...
?Cancer in skin? A "punch biopsy" by definition means removing a very small (1/16-1/8") circle of skin, and a tiny amount of fat underneath it. The reason for doing so is redness or a "rash" that spreads onto the chest, neck, back, or lower abdomen and RARELY can be the return of breast cancer, confined to the skin. This biopsy does not go deeper, and is done by numbing the skin. Good luck to you! Read more...

Is it possible to tell of benign breast tumor from cancer by feel?

No. While some lumps may feel more worrisome to a trained professional, it is easy to get fooled. The only way to differentiate a benign lump from a malignant one is by looking at tissue under a microscope, a biopsy. This can be safely and easily performed under local anesthesia either in your breast doctor's office or a breast center. Read more...
Can be difficult. There are features that suggest cancer rather than a benign mass such as hardness, lack of mobility, irregularity, and proximity to other structures. Most cancer cannot even be felt. Mammography, ultrasound, or MRI can also suggest a cancer, but only a biopsy of the tissue can determine that for sure. Read more...
No. No, you can not tell whether it is benign or malignant tumor by feeling the tumor. Only biopsy and direct visualization under microscope are the only thing that can differentiate whether it is benign or malignant. Read more...

I have breast tumor will turn to cancer after sex?

No relationship. There is no relationship between sex and breast cancer, except that if you get pregnant and breast feed it reduces your risk. Read more...

If you have a breast tumor for about 5 years now could it be cancer?

Medical examination. You need to get an examination done by your doctor. Breast tumors can arise in younger women but they are often benign(like a fibroadenoma). Yet you must get an examination and follow up with your doctor now! Read more...

Are breast tumor, cyst and cancer have same symptoms? Tumor has similar but which does cancer have that tumors don't carry?

Yes and No. Cyst are filled with fluids. Tumors can be solid and cystic. there are Benign cysts, in the breasts and can be cyclical. Follow the Menstrual Cycle. Some times cysts are painless. If there is any lump you feel in your breasts it is best to get examined and et your MD's advise. Read more...
The most common. Symptom that distinguishes a malignant tumor from a benign tumor in terms of constitutional symptoms is weight loss. However that typically doesn't happen until disease is advanced in breast cancer. That's why doctors are so vigilant about investigating even probable benign tumors of the breast. The most important thing that determines success in treatment of breast cancer is early detection. Read more...
Lumps. Tumor is a nonspecific term for a growth which may be benign or malignant. Malignant tumors grow and often spread while benign tumors may grow but don't spread to distant tissues. A cyst is a fluid filled growth which is usually benign. Even benign breast tumors and cysts may cause pain and tenderness and may require surgery. Read more...