The median tumor was 25.7 mm and the incidence of tumor–vascular invasion or contact of ≥180° was 36.4% (67/184) for SMV/PV, 9.2% (17/184) for CA, 15.2% (28/184) for SMA and 15.2% (28/184) for CHA. Here, SMN1 is linked to neoplasm.