I have seen all your FDG-PET reports, which is very sensitive to detect any tumor activity in unidentified mass as the scan shows solitary pulmonary nodules in the left lateral lower lobe. This scan is beneficial to identify and detect tumor by detecting the oxygen utilization level as tumors have growing tissue, which takes more oxygen, so it shows increased activity of that area. Now I will tell you what is happening in your case.
Generally, a solitary nodule is very common in the population as it has asymptomatic, multiple etiologies like infection, tuberculosis, simple benign tumor-like hemangiomas, inflammatory disease like sarcoidosis, malignancy, and pulmonary embolism, this all causes pulmonary nodules, out of which 90 % are asymptomatic or benign type.
But in your case in the scan
1. Some metabolic activity is seen but not that significant as normal-malignant tissue shows,
2. The nodule has a well-defined shape, but with pleural extension.
3. There is no hilar lymphadenopathy, which is very common in lung malignancy. So it can be a healing granulation tissue, secondary to infection or immune reaction, but it is more unlikely to be a tumor.
The last thing I wanted to ask you is, do you have any symptoms of breathlessness, weight loss, anorexia (eating disorder), or heavy smoking history, or hemoptysis (coughing up blood)? Kindly tell the history for better detection.
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