Flocculent flocculent shadow of the basal segment within the lower lobe of the right lung with little inflammatory changes is not necessarily a cancer metastasis.
Often, inflammatory manifestations of the lungs can present as a flocculent flaky image of the basal segments with inflammatory changes. This is an imaging description of inflammation in the lungs and is usually indicative of chronic inflammation of the lungs.
Most of the metastatic carcinomas in the lungs are characterized by disseminated nodules and multiple nodules, which are usually not accompanied by inflammatory exudation. The main primary tumors of metastatic carcinoma of the lung can be gastric cancer, colorectal cancer, hepatocellular carcinoma, and many other malignant tumor types.
Of course, this kind of chronic inflammatory manifestation cannot completely exclude tumor metastasis, and the final judgment should be made by combining the results of various examinations, such as tumor markers.
Thus, this kind of imaging manifestation is not necessarily cancer metastasis, but more likely to be chronic pneumonia. However, this case should be evaluated by the imaging physician.