Dataset related to article "Transversal hepatectomies: Classification and intention-to-treat validation of new parenchyma-sparing procedures for deep-located hepatic tumors"

This record contains raw data related to article “Transversal hepatectomies: Classification and intention-to-treat validation of new parenchyma-sparing procedures for deep-located hepatic tumors"

Background: Deep-located liver tumors involving hepatic veins at the caval confluence or main Glisso- nean pedicles generally require a major hepatectomy. An intraoperative ultrasound guidance policy opened a possibility to opt for parenchyma-sparing procedures as alternatives to major hepatectomy, called transversal hepatectomies. We ought to standardize the procedure and analyze the surgical outcome, oncological suitability, and salvageability.

Methods: This is a retrospective cohort study. All consecutive patients undergoing hepatectomies for liver tumors between January 2005 and August 2020 were reviewed. Transversal hepatectomies were classified as follows: upper transversal hepatectomy: resection of the posterosuperior segments along with at least 1 hepatic vein and preservation of the anteroinferior ones; roller coaster hepatectomy: transversal hepatectomy with tumor vessel detachment from at least 2 hepatic veins; and lower transversal hepatectomy: amputation of the distal portion of at least 1 hepatic vein with tumor vessel detachment from first/second-order Glissonean pedicles. Morbidity, mortality, local recurrences, and salvageability in cases of relapse were considered.

Results: A total of 61 transversal hepatectomies were performed: 40 (66%) upper transversal hepatec- tomies, 19 (31%) roller coaster hepatectomies, and 2 (3%) lower transversal hepatectomies. The median preserved liver volume was 67% (range 41e86). Mortality was 0, and major morbidity was 6%. Local recurrence occurred in 7 (11%) patients. Ten out of 34 (29%) patients with liver-only recurrence received redo surgery.

Conclusion: Transversal hepatectomies offer a new parenchyma-sparing perspective for the manage- ment of complex tumor presentation, which would otherwise demand major tissue removal or even unresectability. Safety, adequate local control, and salvageability are further pillars of this approach herein systematized.