Metastatic lung cancer. Light micrograph (LM). Metastatic lung cancer, is categorized as either Hodgkin's or non-Hodgkin's lymphoma, and begins in another part of the body before it spreads to the lungs. Metastatic tumors in the lungs are cancers that have developed at other places in the body (or other parts of the lungs) and then spread through the bloodstream or lymphatic system to the lungs. It is different from lung cancer that starts in the lungs. Nearly any cancer can spread to the lungs. Magnification x160 when printed 10cm wide.