Lung Cancer –
Tumor size determines likelihood of Cancer Spreading
February 15th, 2006
In the February
13th issue of the Archives of Internal medicine a study reported that
the smaller the tumors in lung cancer the less likely the cancer will
spread. The researchers believe that the earlier the detection, the
better chance for successfully treating lung cancer.
researcher, Claudia I. Henschke, M.D., Ph.D., New York Presbyterian
Hospital–Weill Cornell Medical Center, New York, along with colleagues
from the International Early Lung Cancer Action Program screened 28,689
men and women for lung cancer. This took place at over 38 different
medical institutions worldwide from 1993 through 2004. The screenings
were performed with a computed tomography (CT) scan.
using a CT scan allows for early detection of lung cancer when a person
is unaware of even having lung cancer. The CT scan finds tumors that
are smaller in size. Tumors less than 30 millimeters in diameter are
classified as stage IA. The IB tumors measure larger than 30
millimeters in diameter. Because of the use of CT scan, the size rating
of stage I cancers now have two size categories; IA, and IB. There is
some relationship to tumor size and the prognosis of surviving lung
Of these 28,689
people, 464 people were diagnosed with lung cancer. The 464 people with
the lung cancer were further classified as either small cell or
non-small cell along with the size of the tumors at the time of
diagnosis. They also made a note of those that had cancer that had
metastasized or spread. The patient’s tumors were determined if they
were solid, nonsolid or part-solid.
The majority, 436
patients, had non-small cell cancers. This type of cancer tends to be
less aggressive than small-cell cancers. The larger the tumor the more
likely the cancer would spread. If the tumors were solid there was a
higher chance for cancer spreading. The part-solid tumors had a lesser
chance for spreading. It did not seem likely to spread with nonsolid
The 28 patients of
the 464 with lung cancer had small cell cancer. The tumors associated
with this type of cancer were at a higher risk for spreading.
confirmed herein suggests the usefulness of finding latent cancers at
small sizes," the authors of the study said. "Most lung cancers without
evidence of lymph node metastases are curable, with the curability rate
being higher at smaller sizes. This suggests that tumor diameter also
serves as a prognostic indicator for curability, perhaps even for
micrometastases not detectable by our current techniques."
The FDA states on their website, "The radiation from a CT scan may be
associated with a very small increase in the possibility of developing
cancer later in a person's life."
Although CT scan can detect tumors in lung and colon cancer, more
research needs to be done in regards to the safety of this technology.
It is debated that CT scans preformed on a annual basis could actually
Best Syndication Staff Writer
Books on Cancer
Keywords and misspellings: brane braine canser cancar
lunge erley detiction c.t. scan for lung cancer tumour small-cell
non-small-cell types of lung cancer reserch study