Defense Trade Cooperation Treaties & Resources. This page provides information intended to assist in using the Defense Trade Cooperation Treaties the U.S. has signed with the United Kingdom and Australia. The information provided here supports the users of the exemptions to the International Traffic in Arms Regulations (ITAR) created pursuant to the Treaties.
Definition of Lung Nodules. A lung nodule is defined as a âspotâ on the lung that is three centimeters (about 1.5 inches) in diameter or less. If an abnormality is seen on an x-ray of the lungs that is larger than three centimeters, it is considered a âlung massâ instead of a nodule and is more likely to be cancerous.
1 Benign tumors â Benign lung tumors such as hamartomas can show up as a nodule in the lungs on x-ray. 2  Malignant tumors â This includes lung cancer, lymphomas, and cancer that has spread to the lungs from other parts of the body, among others. lung nodule is defined as a âspotâ on the lung that is 3 cm (about 1Â½ inches) in diameter or less. If an abnormality is seen on an x-ray of the lungs that is larger than 3 cm, it is considered a âlung massâ instead of a nodule.