Fig. 1

In a middle-aged patient, two ground-glass opacity nodules were located in the lateral segment of the right middle lobe (a white arrowhead; axial section size was about 1.4cmx1.5 cm) and the dorsal segment of the right lower lobe (a white arrow; axial section size was about 0.9cmx1.1 cm), respectively. Histopathologically, the lesion in the right middle lobe was diagnosed as minimally invasive adenocarcinoma with predominant lepidic growth (b H&E, × 50;) and the one in the lower lobe was invasive adenocarcinoma presented as acinar pattern (c H&E, × 50) (Digital slice scanning system: PRECICE 500B; UNIC TECHNOLOGIES INC, Beijing, China). Neither of them is metastatic disease. The patient maintained a prone position during the interventional procedure (d middle lobe implantation; e lower lobe implantation) and the entire implantation was successfully performed with minor pneumothorax (e indicated with black arrows). The tails of the microcoils were visualized during VATS (indicated with black arrows; f corresponded to d; g corresponded to e)