摘要
To identify the portal pedicles in liver pathology is difficult: anatomical variations are ignored and only the modal disposition is retained, the obliquity of the liver in situ is ignored: strongly inclined to the right, posteriorly and inferiorly (the anterior sector is above and to the right of the posterior sector, their pedicles in an antero-posterior radiogram are superposed); and the sizes of segments IV and VI are quite variable (embryologic result). This study was made with a collection of 111 vasculo-biliary acrylic casts.