How often should one have a spiral CT scan to check for lung cancer?

Depends. Ct-scan screening for lung cancer is appropriate for specific patients that meet certain criteria. See this link: http://www.Cancer.Net/publications-and-resources/what-know-ascos-guidelines/what-know-accp-and-asco-guideline-lung-cancer-screening/recommendations-lung-cancer-screening.
New study. Recent low dose screening ct trial suggests that heavy smokers be screened and was associated with better overall survival.
Rarely. A ct scan is not a screening exam. You only do one when you are looking at something with high suspicion. That is a lot of radiation to be routinely exposed to when you are screening for cancer.

Related Questions

When would you do a spiral CT scan to check for lung cancer?

High risk groups. It is recommended for two groups: 1- 55 to 74 yo with 30 pack year smoking, current smokers or quit in past 15 years. 2- 50 & older minimum 20 pack years and at least one additional risk factor. Read more...
Almost always. Almost all medical diagnosis' are evaluated by history, physical exam, and some testing. In a smoker with new chest symptoms ( cough, pain, difficulty breathing ) it would be recommended. Most often a chest x-ray or ct scan is performed for an entirely other reason and a lung nodule or mass is found that turns out to be lung cancer. Read more...
Lesion on X-ray. A suspicious lesion on a chest x-ray may need to be investigated by ct to get a better resolution. Other signs and symptoms that may suggest exclusion of lung cancer, are unexplained cough with or without blood tinged sputum, unexplained enlarged cervical node or mediastinal lymph nodes, unexplained metastases. Spiral ct refers to the method of doing ct. Read more...
Screening Criteria. The national lung screening trial has demonstrated that people who are aged 55-74, heavy smokers, or quit within 15 years have increased survival if they undergo screening for lung cancer with a low dose chest ct scan. Read more...

Is it possible to get lung cancer from a spiral CT scan?

Possible. Not from one, but from many. Cts dose you with radiation. The more you have the higher the risk of getting cancer. Most common are immune cancers such as lymphoma and leukemia. Read more...
Possible Not Likely. Medical radiation is estimated to cause about 1% of cancers. Patients trested with radiation therapy have about a 0.5% chance of having a radiation related 2nd cancer. The risk from a single spiral ct is considerably less and would likely occur 10-20 years after the exposure. Bottom line is that tests like ct scans should only be ordered for good reasons. Read more...

Can one chest CT scan damage lung and cause lung cancer?

Not likely. The natural exposure one might get just from where you live may exceed 3msv per year. Living in denver, you might be exposed to 6msv per year. Risk of developing cancer from a properly conducted ct scan is low. I believe the estimated average radiation exposure for a single chest ct is about 5-7msv. A low dose chest ct is about 2msv. Read more...

What are the chances of getting lung cancer from one chest CT scan? I had one chest CT scan month ago and I m worried about cancer risk.

None! You cannot get cancer from one routine ct scan. It takes more than dozens of ct scans over a life time, even then it is rare to have this problem. Otherwise we will be foolish doing ct scans on people in order to help them! Read more...

I have a fear of getting lukemia or lung cancer from one chest CT scan which I had one month ago. Is it dangerous to have CT scan? Can I get cancer?

Perspective. The risk is too small to measure reliably, and the claims i've seen about diagnostic x-rays causing thousands of cases of cancer yearly look to me to be flawed. You also need to be aware that you're exposed to background radiation constantly that makes up a far greater amount of your exposure. Dna mutates even from quantum fluctuations. If you still can't manage this fear, your doctor can help. Read more...
Unlikely. There is some radiation, but very low risk with only one ct. Read more...
Risk and Reality. You should not undergo unnecessary CT scans, there is a risk of about 1/10,000. Leukemia is not a real concern. The scan was likely done to assess for a blood clot on the lung. You had a chance of dying if that were true larger than risk of cancer from the CT scan. Read more...
No risk. A single chest CT does not pose a risk to you of developing any type of malignancy. Multiple scans over time can increase risk. Read more...

Is it feasible to have had small cell lung cancer causing malabsorption for 1 year but not show on CT scan.

No. Although a negative CT does not guarantee that you are totally free of cancer cells, your malabsorption has nothing to do with the cancer. If you have received radiation for the condition, then that Rx might potentially though unlikely lead to GI changes. Read more...

Is it true that the primary tumor in small cell lung cancer is often occult? Does this mean even a CT scan can't see it? Do we only detect on spread

At some point. in its development, every cancer is "occult" because it originates on a microscopic level. CT has a high sensitivity for detecting lung cancer, approximately 95%, so CT will detect the vast majority of lung cancers. Read more...