"right hepatic vein located in the right intersegmental fissure divides the right lobe into right lateral (posterior) and right medial (anterior) sections."
"middle hepatic vein lies in the main lobar fissure, divides the liver into right and left lobes (or right and left hemiliver): this vertical plane runs from the inferior vena cava to the gallbladder fossa and is known as Cantlie's line. To the right is the right medial section and to the left is the left medial section."
"left hepatic vein located in the left intersegmental fissure, divides the left lobe into left medial and left lateral sections."
"right liver or hemiliver: segments 5 - 8. Resection of these segments is termed a right hepatectomy or hemihepatectomy."
"left liver or hemiliver: segments 2 - 4 (+/- segment 1). Resection of these segments is termed a left hepatectomy or hemihepatectomy (+/- segment 1)."
"right anterior section: segments 5 and 8. Resection of these segments is termed a right anterior sectionectomy."
"right posterior section: segments 6 and 7. Resection of these segments is termed a right posterior sectionectomy."
"left medial section: segments 4a and 4b. Resection of these segments is termed a left medial sectionectomy or segmentectomy 4."
"left lateral section: segments 2 and 3. Resection of these segments is termed a left lateral sectionectomy or bisegmentectomy 2,3."
"right liver or hemiliver: segments 5 - 8. Resection of these segments is termed a right hepatectomy or hemihepatectomy."
"left liver or hemiliver: segments 2 - 4 (+/- segment 1). Resection of these segments is termed a left hepatectomy or hemihepatectomy (+/- segment 1)."
"right anterior section: segments 5 and 8. Resection of these segments is termed a right anterior sectionectomy."
"right posterior section: segments 6 and 7. Resection of these segments is termed a right posterior sectionectomy."
"left medial section: segments 4a and 4b. Resection of these segments is termed a left medial sectionectomy or segmentectomy 4."
"left lateral section: segments 2 and 3. Resection of these segments is termed a left lateral sectionectomy or bisegmentectomy 2,3."
"individual segments: termed segmentectomy (e.g. segmentectomy 5)"
"two contiguous segments: if from different sections, termed bisegmentectomy (e.g. bisegmentectomy 5, 6)"
"right liver or hemiliver: segments 5 - 8. Resection of these segments is termed a right hepatectomy or hemihepatectomy."
"left liver or hemiliver: segments 2 - 4 (+/- segment 1). Resection of these segments is termed a left hepatectomy or hemihepatectomy (+/- segment 1)."
"The Couinaud classification (French eponym: pronounced kwee-NO) is the most widely used system to describe functional liver anatomy. It is the preferred anatomy classification system as it divides the liver into eight independent functional units (termed segments) rather than relying on the traditional morphological description based on the external appearance of the liver."
"middle hepatic vein lies in the main lobar fissure, divides the liver into right and left lobes (or right and left hemiliver): this vertical plane runs from the inferior vena cava to the gallbladder fossa and is known as Cantlie's line. To the right is the right medial section and to the left is the left medial section."
"segment 1 (I) is the caudate lobe"
"segment 4 (IV) lies between the left and middle hepatic veins; it is subdivided into 4a (IVa) (superior) and 4b (IVb) (inferior) subsegments"
"segment 4 (IV) lies between the left and middle hepatic veins; it is subdivided into 4a (IVa) (superior) and 4b (IVb) (inferior) subsegments"
"easy tip: 4a is above and 4b is below the portal plane"
"easy tip: 4a is above and 4b is below the portal plane"
"easy tip: 4a is above and 4b is below the portal plane"
"easy tip: 4a is above and 4b is below the portal plane"
"second-order division anatomy"
Expected headings
"Delineation of segments"
"Segments"
"Surgical relevance"
"segment 4 (IV) lies between the left and middle hepatic veins; it is subdivided into 4a (IVa) (superior) and 4b (IVb) (inferior) subsegments"
"segment 4 (IV) lies between the left and middle hepatic veins; it is subdivided into 4a (IVa) (superior) and 4b (IVb) (inferior) subsegments"
"resection of left hemiliver plus right anterior lateral section, it is termed extended left hepatectomy or hemihepatectomy; however, the preferred term is left trisectionectomy"
"resection of right hemiliver plus left medial section, it is termed extended right hepatectomy or hemihepatectomy; however, the preferred term is right trisectionectomy"
"individual segments: termed segmentectomy (e.g. segmentectomy 5)"
"two contiguous segments: if from different sections, termed bisegmentectomy (e.g. bisegmentectomy 5, 6)"
"History and etymology"