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Doctor insights on: Cancer Res

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In a patient who has a very fast growing/high metabolic activity cancer, how small a tumor can be detected on a high-res pet scan?

In a patient who has a very fast growing/high metabolic activity cancer, how small a tumor can be detected on a high-res pet scan?

1-2 centimeters: The sensitivity of pet scanning (in combination with ct) is dependent on the origin and metabolic activity of the cancer and the part of the body that is being scanned. In general, most 2 cm cancers will be identified; as many as 1/3 of all cancers less than 1cm may be missed. ...Read more

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Dr. Barry Rosen
4,223 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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How often does eye cancer require removing the eye? I understand that taking out the eye is the best way to be sure you've gotten all of the eye cancer, but is that always the best options? Are there certain types or sizes of tumors that are likely to res

How often does eye cancer require removing the eye? I understand that taking out the eye is the best way to be sure you've gotten all of the eye cancer, but is that always the best options? Are there certain types or sizes of tumors that are likely to res

There : There are many different treatments for eye cancers and eye removal or enucleation is reserved for cases where vision and eye sparing techniques cannot be used successfully. Treatment is based on the cancer type, extent, and vision status of the eye. Additional factors may include whether a patient can tolerate the treatments based on health status. Finally social issues may play a role, i.e. If multiple treatments are offered can a patient successfully go to all the appointments, etc. ...Read more

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I have all the symptoms of lung cancer: shortness of breath, cough with yellow phlegm and occasional red streaks, fingernail clubbing...but my Chest X-Ray and Noncontrast High-Res Chest CT were negative. Doctors are saying I'm fine, but I'm scared?

I have all the symptoms of lung cancer: shortness of breath, cough with yellow phlegm and occasional red streaks, fingernail clubbing...but my Chest X-Ray and Noncontrast High-Res Chest CT were negative. 

Doctors are saying I'm fine, but I'm scared?

Trust your physician: or obtain a pulmonary medical consultation as a second opinion. Without symptoms such as weight loss. anorexia, expectorating pure blood. chronic spasmodic coughing,etc. this is not consistent with lung cancer, especially with a negative CT scan. I suggest behavioral counseling with a certified psychotherpist for CBT. ...Read more

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What is cancer?

What is cancer?

Uncontrolled growth: Cancer or malignancy, refers to uncontrolled growth of cells, invasion and destruction of normal tissues by these cells and spread to distant organs with damage to those organs. ...Read more

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What is cancer?

What is cancer?

Abnormal growth: Body has capacity to control its growth, maintain cells normal structure & function , have a purpose, will co ordinate with other cells of body, stays with in the confinements like a well trained army, cancer cell does exactly opposite, abnormal cell no control invade and spread to other tissue and cancer cell has no purpose in the body. ...Read more

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What is cancer?

What is cancer?

Abnormal cells: quoted from Medicine Net. com:. "Cancer is an abnormal growth of cells which tend to proliferate in an uncontrolled way and in some places metastasize (spread). Cancer is not one disease. It is a group of more than 100 different distinctive diseases." You can go online and research more about the different types. ...Read more

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What is cancer?

What is cancer?

Mutated cells: A tumor is a clone of cells bearing genetic mutations that cause inappropriate growth, and that has acquired the ability to induce its own new blood vessels as a new organ would. A cancer is a tumor in which the genome has become destabilized, so it acquires new mutations and eventually gains the ability to invade locally and usually to spread. All cancers will kill if not treated properly. ...Read more

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What is cancer?

What is cancer?

A mutation that grew: A cancer is a mutation that grows fast enough in one's lifetime to cause disease. To reduce the risk of cancer, maintain a healthy weight and exercise. Eat lots of vegetables, some fruits, and limit intake of red meat or burned/charbroiled meat. Avoid smoking, because it increases lung, oral, and throat cancers; plus cervical cancers in women. Wear sunscreen outside to prevent skin cancer. ...Read more

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What is cancer?

What is cancer?

Cancer: Cancer refers to a group of diseases characterized by uncontrolled cell growth, leading to damage of normal tissues. For information, see the website of the American Cancer Society at www.acs.org ...Read more

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What is cancer?

What is cancer?

It is a Disease of C: Cancer arises from our body cells when they grow out of control. it is caused be gene abnormalities and manifests as an abnormal lump/Growth in some or any part of your body. If it is not removed, it spreads in the body and can be fatal if not treated promptly. Early diagnosis make a big diffence in outcome ...Read more