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20.04.2018 | Oncology

Surgery after FOLFIRINOX treatment for locally advanced and borderline resectable pancreatic cancer: increase in tumour attenuation on CT correlates with R0 resection

verfasst von: Giovanni Marchegiani, Valentina Todaro, Enrico Boninsegna, Riccardo Negrelli, Binit Sureka, Debora Bonamini, Roberto Salvia, Riccardo Manfredi, Roberto Pozzi Mucelli, Claudio Bassi

Erschienen in: European Radiology | Ausgabe 10/2018

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Abstract

Objectives

To assess factors associated with radical resection (R0) of pancreatic ductal adenocarcinoma (PDAC) after induction treatment with FOLFIRINOX.

Methods

Patients with either locally advanced (LA) and borderline resectable (BR) PDAC undergoing surgical exploration after FOLFIRINOX were retrospectively enrolled. Two pancreatic radiologists reviewed the CT blinded to the final outcome and assessed chemotherapy response and resectability. Patients were then divided into R0 resected (group A) and not resected/R1 resected (group B), which were compared.

Results

Of 59 patients included, 19 were defined as unresectable (32%), 33 borderline resectable (56%) and 7 resectable (12%) during the blind radiological evaluation after FOLFIRINOX. Once in a surgical setting, 27% were non-resectable, whereas 73% received surgical resection with a 70% R0 rate. Consequent sensitivity and specificity were 86% and 29%. At imaging review, significant decreases in longest tumour dimension were observed in both groups: from 32 mm (95% CI 15–55) to 21 (10–44) in group A and from 34 (18–70) to 26 (7–60) in group B, p < 0.05. However, a significant increase in tumour attenuation in all phases was only observed for R0 resected, from 52 HU (26–75) to 65 (35–92) in arterial phase (p < 0.001) and from 62 (36–96) to 78 (40–120) in the venous (p = 0.001).

Conclusion

After neoadjuvant FOLFIRINOX, CT predicted resectability with acceptable sensitivity but low specificity. The observation of increased tumour attenuation at CT scan after FOLFIRINOX treatment might represent a reliable predictor of R0 resection.

Key Points

• CT drives the assessment of PDAC resectability after FOLFIRINOX

• CT predicts resectability with acceptable sensitivity but low specificity

• Significant increase in tumour attenuation was only observed for R0 resected PDAC

• Tumour attenuation after FOLFIRINOX represents a reliable predictor of R0 resection

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Titel: Surgery after FOLFIRINOX treatment for locally advanced and borderline resectable pancreatic cancer: increase in tumour attenuation on CT correlates with R0 resection
verfasst von: Giovanni Marchegiani
Valentina Todaro
Enrico Boninsegna
Riccardo Negrelli
Binit Sureka
Debora Bonamini
Roberto Salvia
Riccardo Manfredi
Roberto Pozzi Mucelli
Claudio Bassi
Publikationsdatum: 20.04.2018
Verlag: Springer Berlin Heidelberg
Erschienen in: European Radiology / Ausgabe 10/2018
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-018-5410-6

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Surgery after FOLFIRINOX treatment for locally advanced and borderline resectable pancreatic cancer: increase in tumour attenuation on CT correlates with R0 resection