Abstract
Background
Resection margin status is a known prognosticator in patients who undergo resection for hilar cholangiocarcinoma. However, the influence of an isolated positive circumferential margin on clinical outcome is unclear.
Methods
Patients with resected de novo hilar cholangiocarcinoma from two European hepatobiliary centres (Medical University of Vienna and Aintree University Hospital, 2006–2016) were classified according to resection margin status (negative, surgically positive, isolated circumferentially positive) and investigated with respect to overall survival (OS), recurrence-free survival (RFS) and recurrence pattern.
Results
Eighty-three (48 male/35 female) patients were enrolled. The median age was 64 years (range 33–80). The median follow-up was 21.7 months (range 0.3–92.4). Forty (48%) patients had negative resection margins, 25 (30%) had an isolated positive circumferential margin and 18 (22%) had a positive surgical margin. The 5-year OS rates in patients with negative, isolated positive circumferential and positive surgical resection margins were 47%, 33% and 0%, respectively. Median OS was 45.6, 32.7 and 14.5 months, respectively (log rank, P = 0.011). Upon multivariable Cox regression analysis, resection margin status and lymph node status remained statistically significant (P < 0.05). No difference with respect to RFS and recurrence pattern was found between the groups (P > 0.05).
Conclusion
Our data show that these three resection margin types were associated with different clinical outcomes. Circumferential margin status may therefore serve as a novel prognostic biomarker.
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Acknowledgment
The authors thank Katharina Woeran, MD, Clinical Institute of Pathology, Medical University Vienna, for providing the histological image of the circumferential resection margin presented as Supplementary Figure S1.
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Supplementary Fig. S1
Histopathological image showing a positive circumferential resection margin (tumour cells found at the inked edge, red arrow) and the remaining normal tissue (blue arrow) of a bile duct (TIFF 75945 kb)
Supplementary Fig. S2
RFS according to status of resection margins (log rank, P = 0.10) (TIFF 1501 kb)
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Stremitzer, S., Stift, J., Laengle, J. et al. Prognosis and Circumferential Margin in Patients with Resected Hilar Cholangiocarcinoma. Ann Surg Oncol 28, 1493–1498 (2021). https://doi.org/10.1245/s10434-020-09105-1
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DOI: https://doi.org/10.1245/s10434-020-09105-1