Fig. 2

Fresh-frozen human cadaver and intraoperative findings. Fresh-frozen human cadaver findings a, c, e Intraoperative findings b, d, f Images obtained after lower lobectomy and lingulectomy a, b Three interrupted sutures were inserted in the deep part of the surgical field c, d Next, further interrupted sutures were inserted, starting from the deepest point of the surgical field and moving in the lateral direction e, f