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Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) in colorectal liver metastasis: the radiologist’s perspective

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Abstract

Purpose

Hepatic resection is the only potentially curative treatment for patients with colorectal liver metastasis (CRLM). Many multidisciplinary approaches, including the associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) procedure, have been proposed to increase the resectability rate in these patients. ALPPS is the most recently described staged liver resection technique, representing an advantageous strategy to induce a rapid and marked increase in the future liver remnant (FLR) volume. The aim of this article is to describe the radiological evaluation of this procedure and its variation.

Methods

This retrospective study included 9 patients with CRLM who underwent the ALPPS procedure. Abdominal imaging studies were reviewed, with an emphasis on a rational radiological approach. The number of liver metastases, the FLR volume (pre- and postportal vein ligation), anatomical variations, potential pitfalls related to disease progression, and postoperative complications were evaluated.

Results

The types of hepatic resection included 4 classical ALPPS cases, 3 right ALPPS variations, and 2 left ALPPS variations. The mean FLR volume calculated in the initial evaluation was 453 mL (213–790 mL). Following the first surgery, the mean FLR volume increased to 634 mL (410–957 mL), which indicated a mean volume increase of 181.1 mL (95% CI 149.7–212.5 mL; p < 0.001) and a mean absolute volume increase of 48% (19%–88%).

Conclusion

The ALPPS procedure is an emerging form of two-stage hepatectomy. In this context, radiologists should provide crucial preoperative and perioperative information that may change surgical planning and contribute to an improvement in the oncologic outcome.

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Abbreviations

ALPPS:

Associating liver partition and portal vein ligation for staged hepatectomy

CRLM:

Colorectal liver metastasis

FLR:

Future liver remnant

IM1:

First imaging evaluation (staging imaging)

IM2:

Second imaging evaluation (recalculation of the FLR)

IM3:

Third imaging evaluation (complication assessment)

MDCT:

Multidetector computed tomography

PHLF:

Posthepatectomy liver failure

PVL:

Portal vein ligation

TLV:

Total liver volume

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Correspondence to R. O. Bezerra.

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The authors of this manuscript declare that they have no relationships with any companies, whose products or services may be related to the subject matter of the article. The authors also state that this work has not received any funding. Institutional Review bBoard approval was obtained. W, and the need for written informed consent was waived by the Institutional Review Board.

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The institutional review board approved this HIPAA-compliant study and waived the need for informed consent.

Research involving animal and human rights

All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required. This article does not contain any studies with human participants or animals performed by any of the authors.

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Zattar-Ramos, L.C., Bezerra, R.O., Siqueira, L.T. et al. Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) in colorectal liver metastasis: the radiologist’s perspective. Abdom Radiol 41, 2150–2160 (2016). https://doi.org/10.1007/s00261-016-0832-6

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  • DOI: https://doi.org/10.1007/s00261-016-0832-6

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