In glioblastomas, a study, in which 99mTc-labeled microparticles (macroaggregated albumin) were injected selectively transarterially into the tumor and brain and lung scintigraphy were performed, found that the majority of injected microparticles bypassed the tumor and reached the lungs: the average shunt index was 67% (range 47–89%). This evidence concerns the gene ALB and neoplasm.