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Adham S, Ferri M, Lee SY, Larocque N, Alwahbi OA, Ruo L, van der Pol CB. Pancreatic ductal adenocarcinoma (PDAC) regional nodal disease at standard lymphadenectomy: is MRI accurate for identifying node-positive patients? Eur Radiol 2023; 33:5976-5983. [PMID: 37004569 DOI: 10.1007/s00330-023-09597-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 04/04/2023]
Abstract
OBJECTIVE To determine the accuracy of qualitative and quantitative MRI features for the diagnosis of pathologic regional lymph nodes at standard lymphadenectomy in patients with pancreatic ductal adenocarcinoma (PDAC). METHODS All adult patients with pancreatic MRI performed from 2011 to 2021 within 3 months of a pancreaticoduodenectomy were eligible for inclusion in this single-center retrospective cohort study. Regional nodes at standard lymphadenectomy were independently reviewed by two fellowship-trained abdominal radiologists for the following qualitative features: heterogeneous T2 signal, round shape, indistinct margin, peri-nodal fat stranding, and restricted diffusion greater than the spleen. Quantitative characteristics including primary tumor size, largest node short- and long-axes length, number of regional nodes, absolute apparent diffusion coefficient (ADC) values, and ADC node-to-spleen signal index were assessed. Analysis was at the patient-level with surgical pathology as the reference standard. RESULTS Of 75 patients, 85% (64/75) were positive for regional nodal disease on histopathology. None of the qualitative variables evaluated on MRI was associated with pathologic nodes. Median primary tumor maximum diameter was slightly larger for patients with pathologic nodes compared to those without (18 mm (10-42 mm) vs 16 mm (9-22 mm), p = 0.027). None of the other quantitative features was associated with pathologic nodes. Radiologist opinion was not associated with pathologic nodes (p = 0.520). Interobserver agreement was fair (kappa = 0.257). CONCLUSIONS Lymph node morphologic features and radiologist opinion using MRI are of limited value for diagnosing PDAC regional nodal disease. Improved diagnostic techniques are needed given the prognostic implications of pathologic lymph nodes in these patients. KEY POINTS • Multiple lymph node morphologic features routinely assessed on MRI for malignancies elsewhere in the body are likely not applicable when assessing for pancreatic ductal adenocarcinoma nodal disease. • Interobserver agreement for the presence or absence of pancreatic ductal adenocarcinoma lymph node morphologic features on MRI is fair (kappa = 0.257). • Many more lymph nodes are resected at PDAC standard lymphadenectomy than are detectable on MRI, median 25 vs 5 (p < 0.001), suggesting improved diagnostic techniques are needed to identify PDAC nodal disease.
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Affiliation(s)
- Sami Adham
- Department of Diagnostic Imaging, Juravinski Hospital and Cancer Centre, Hamilton Health Sciences, 711 Concession Street, Hamilton, ON, L8V 1C3, Canada
- Department of Radiology, McMaster University, Hamilton, ON, Canada
| | - Melanie Ferri
- Department of Diagnostic Imaging, Juravinski Hospital and Cancer Centre, Hamilton Health Sciences, 711 Concession Street, Hamilton, ON, L8V 1C3, Canada
- Department of Radiology, McMaster University, Hamilton, ON, Canada
| | - Stefanie Y Lee
- Department of Diagnostic Imaging, Juravinski Hospital and Cancer Centre, Hamilton Health Sciences, 711 Concession Street, Hamilton, ON, L8V 1C3, Canada
- Department of Radiology, McMaster University, Hamilton, ON, Canada
| | - Natasha Larocque
- Department of Radiology, McMaster University, Hamilton, ON, Canada
- Hamilton General Hospital, Hamilton Health Sciences, Hamilton, ON, Canada
| | - Omar A Alwahbi
- Department of Radiology, McMaster University, Hamilton, ON, Canada
| | - Leyo Ruo
- Department of Radiology, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Juravinski Hospital and Cancer Centre, Hamilton Health Sciences, Hamilton, ON, Canada
| | - Christian B van der Pol
- Department of Diagnostic Imaging, Juravinski Hospital and Cancer Centre, Hamilton Health Sciences, 711 Concession Street, Hamilton, ON, L8V 1C3, Canada.
- Department of Radiology, McMaster University, Hamilton, ON, Canada.
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Katou S, Wenning AS, Aeschbacher P, Morgul H, Becker F, Pascher A, Gloor B, Strücker B, Andreou A. Resection margin status at the portomesenteric axis may not determine oncologic outcome after pancreaticoduodenectomy for lymph node-positive pancreatic ductal adenocarcinoma. Surgery 2023:S0039-6060(23)00129-0. [PMID: 37121858 DOI: 10.1016/j.surg.2023.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/19/2023] [Accepted: 03/11/2023] [Indexed: 05/02/2023]
Abstract
BACKGROUND Lymph node and resection margin status are associated with oncologic outcomes after pancreaticoduodenectomy for pancreatic ductal adenocarcinoma. However, surgical radicality at the portomesenteric axis in case of suspected infiltration remains controversial. METHODS Clinicopathological data of patients who underwent a partial or total pancreaticoduodenectomy for PDAC between 2012 to 2019 in 2 major hepato-pancreato-biliary centers in Germany and Switzerland were assessed. We evaluated the impact of positive resection margins at the vascular, parenchymal, and retropancreatic surfaces on overall survival in patients with and without lymph node involvement. Margin-positive vascular resection included both patients with positive margins at the vascular groove and the resected venous wall. RESULTS During the study period, 217 patients underwent partial/total pancreaticoduodenectomy for pancreatic ductal adenocarcinoma. After excluding 7 patients suffering postoperative complications resulting in mortality within 90 days after surgery (3%), 169 patients had lymph node involvement (80%). In the entire study cohort, margin-positive resection (33%) was significantly associated with worse overall survival (3-year overall survival: margin-positive resection: 27% vs margin-negative resection: 43%, P = .014). Among patients with positive lymph nodes, margin-positive vascular resection (n = 48, 28%) was not significantly associated with impaired overall survival (3-year overall survival: margin-positive vascular resection: 28% vs margin-negative vascular resection: 36%, P = .065). On the contrary, margin-positive parenchymal resection (n = 7, 4%) (3-year overall survival: margin-positive parenchymal resection: 0% vs margin-negative parenchymal resection: 35%, P < .0001) and margin-positive retropancreatic resection (n = 21, 12%) (3-year overall survival: margin-positive retropancreatic resection: 6% vs margin-negative retropancreatic resection: 39%, P < .0001) significantly diminished overall survival in univariate and multivariate analysis in all patients. Among patients without lymph node involvement (n = 41, 20%), there were no margin-positive parenchymal or margin-positive retropancreatic resections. In contrast, only 5 patients had margin-positive vascular resection (12%), with overall survival compared to those with margin-negative vascular resection. CONCLUSIONS In patients with pancreatic ductal adenocarcinoma and lymph nodal positivity, resection status at the parenchymal and retropancreatic surface but probably not at the portal and/or superior mesenteric vein is a determinant of survival. Therefore, margin-negative resection should be pursued during pancreaticoduodenectomy. However, radical venous resection and/or reconstruction for suspected tumor infiltration may not be necessary for patients with intraoperatively detected lymph node metastases.
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Affiliation(s)
- Shadi Katou
- Department of General, Visceral and Transplant Surgery, University Hospital Münster, Germany.
| | - Anna Silvia Wenning
- Department of Visceral Surgery und Medicine, lnselspital, Bern University Hospital, University of Bern, Switzerland
| | - Pauline Aeschbacher
- Department of Visceral Surgery und Medicine, lnselspital, Bern University Hospital, University of Bern, Switzerland
| | - Haluk Morgul
- Department of General, Visceral and Transplant Surgery, University Hospital Münster, Germany
| | - Felix Becker
- Department of General, Visceral and Transplant Surgery, University Hospital Münster, Germany
| | - Andreas Pascher
- Department of General, Visceral and Transplant Surgery, University Hospital Münster, Germany
| | - Beat Gloor
- Department of Visceral Surgery und Medicine, lnselspital, Bern University Hospital, University of Bern, Switzerland
| | - Benjamin Strücker
- Department of General, Visceral and Transplant Surgery, University Hospital Münster, Germany
| | - Andreas Andreou
- Department of General, Visceral and Transplant Surgery, University Hospital Münster, Germany
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Joliat GR, Labgaa I, Sulzer J, Vrochides D, Zerbi A, Nappo G, Perinel J, Adham M, van Roessel S, Besselink MG, Mieog JSD, Groen JV, Demartines N, Schäfer M. International assessment and validation of the prognostic role of lymph node ratio in patients with resected pancreatic head ductal adenocarcinoma. Hepatobiliary Surg Nutr 2022; 11:822-833. [PMID: 36523941 PMCID: PMC9745624 DOI: 10.21037/hbsn-21-99] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 07/28/2021] [Indexed: 08/30/2023]
Abstract
Background Lymph node ratio (LNR; positive/harvested lymph nodes) was identified as overall survival predictor in several cancers, including pancreatic adenocarcinoma. It remains unclear if LNR is predictive of overall survival in pancreatic adenocarcinoma patients staged pN2. This study assessed the prognostic overall survival role of LNR in pancreatic adenocarcinoma patients in relation with lymph node involvement. Methods A retrospective international study in six different centers (Europe and United States) was performed. Pancreatic adenocarcinoma patients who underwent pancreatoduodenectomy from 2000 to 2017 were included. Patients with neoadjuvant treatment, metastases, R2 resections, or missing data regarding nodal status were excluded. Survival curves were calculated using Kaplan-Meier method and compared using log-rank test. Multivariable Cox regressions were performed to find independent overall survival predictors adjusted for potential confounders. Results A total of 1,327 patients were included. Lymph node involvement (pN+) was found in 1,026 patients (77%), 561 pN1 (55%) and 465 pN2 (45%). Median LNR in pN+ patients was 0.214 [interquartile range (IQR): 0.105-0.364]. On multivariable analysis, LNR was the strongest overall survival predictor in the entire cohort [hazard ratio (HR) =5.5; 95% confidence interval (CI): 3.1-9.9; P<0.001] and pN+ patients (HR =3.8; 95% CI: 2.2-6.6; P<0.001). Median overall survival was better in patients with LNR <0.225 compared to patients with LNR ≥0.225 in the entire cohort and pN+ patients. Similar results were found in pN2 patients (worse overall survival when LNR ≥0.225). Conclusions LNR appeared as an important prognostic factor in patients undergoing surgery for pancreatic adenocarcinoma and permitted to stratify overall survival in pN2 patients. LNR should be routinely used in complement to tumor-node-metastasis (TNM) stage to better predict patient prognosis.
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Affiliation(s)
- Gaëtan-Romain Joliat
- Department of Visceral Surgery, Lausanne University Hospital CHUV, Lausanne, Switzerland
- Graduate School for Health Sciences, University of Bern, Bern, Switzerland
| | - Ismail Labgaa
- Department of Visceral Surgery, Lausanne University Hospital CHUV, Lausanne, Switzerland
| | - Jesse Sulzer
- Division of Hepatobiliary and Pancreatic Surgery, Carolinas Medical Center, Charlotte, NC, USA
| | - Dionisios Vrochides
- Division of Hepatobiliary and Pancreatic Surgery, Carolinas Medical Center, Charlotte, NC, USA
| | - Alessandro Zerbi
- Humanitas Clinical and Research Center-IRCCS, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | - Gennaro Nappo
- Humanitas Clinical and Research Center-IRCCS, Milan, Italy
| | - Julie Perinel
- Department of Digestive Surgery, Edouard Herriot Hospital, Lyon, France
| | - Mustapha Adham
- Department of Digestive Surgery, Edouard Herriot Hospital, Lyon, France
| | - Stijn van Roessel
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Marc G. Besselink
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - J. Sven D. Mieog
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Jesse V. Groen
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Nicolas Demartines
- Department of Visceral Surgery, Lausanne University Hospital CHUV, Lausanne, Switzerland
| | - Markus Schäfer
- Department of Visceral Surgery, Lausanne University Hospital CHUV, Lausanne, Switzerland
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Schneider M, Labgaa I, Vrochides D, Zerbi A, Nappo G, Perinel J, Adham M, van Roessel S, Besselink M, Mieog JSD, Groen JV, Demartines N, Schäfer M, Joliat GR. External validation of three lymph node ratio-based nomograms predicting survival using an international cohort of patients with resected pancreatic head ductal adenocarcinoma. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2022; 48:2002-2007. [PMID: 35606276 DOI: 10.1016/j.ejso.2022.05.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 04/15/2022] [Accepted: 05/04/2022] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Lymph node ratio (LNR) is an important prognostic factor of survival in patients with pancreatic ductal adenocarcinoma (PDAC). This study aimed to validate three LNR-based nomograms using an international cohort. MATERIALS AND METHODS Consecutive PDAC patients who underwent upfront pancreatoduodenectomy from six centers (Europe/USA) were collected (2000-2017). Patients with metastases, R2 resection, missing LNR data, and who died within 90 postoperative days were excluded. The updated Amsterdam nomogram, the nomogram by Pu et al., and the nomogram by Li et al. were selected. For the validation, calibration, discrimination capacity, and clinical utility were assessed. RESULTS After exclusion of 176 patients, 1'113 patients were included. Median overall survival (OS) of the cohort was 23 months (95% CI: 21-25). For the three nomograms, Kaplan-Meier curves showed significant OS diminution with increasing scores (p < 0.01). All nomograms showed good calibration (non-significant Hosmer-Lemeshow tests). For the Amsterdam nomogram, area under the ROC curve (AUROC) for 3-year OS was 0.64 and 0.67 for 5-year OS. Sensitivity and specificity for 3-year OS prediction were 65% and 59%. Regarding the nomogram by Pu et al., AUROC for 3- and 5-year OS were 0.66 and 0.70. Sensitivity and specificity for 3-year OS prediction were 68% and 53%. For the Li nomogram, AUROC for 3- and 5-year OS were 0.67 and 0.71, while sensitivity and specificity for 3-year OS prediction were 63% and 60%. CONCLUSION The three nomograms were validated using an international cohort. Those nomograms can be used in clinical practice to evaluate survival after pancreatoduodenectomy for PDAC.
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Affiliation(s)
- Michael Schneider
- Department of Visceral Surgery, Lausanne University Hospital CHUV, Lausanne, Switzerland
| | - Ismail Labgaa
- Department of Visceral Surgery, Lausanne University Hospital CHUV, Lausanne, Switzerland
| | - Dionisios Vrochides
- Division of Hepatobiliary and Pancreatic Surgery, Carolinas Medical Center, Charlotte, USA
| | - Alessandro Zerbi
- Humanitas Clinical and Research Center - IRCCS, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | - Gennaro Nappo
- Humanitas Clinical and Research Center - IRCCS, Milan, Italy
| | - Julie Perinel
- Department of Visceral Surgery, Lausanne University Hospital CHUV, Lausanne, Switzerland; Department of Digestive Surgery, Edouard Herriot Hospital, Lyon, France
| | - Mustapha Adham
- Department of Digestive Surgery, Edouard Herriot Hospital, Lyon, France
| | - Stijn van Roessel
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Marc Besselink
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - J Sven D Mieog
- Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Jesse V Groen
- Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Nicolas Demartines
- Department of Visceral Surgery, Lausanne University Hospital CHUV, Lausanne, Switzerland.
| | - Markus Schäfer
- Department of Visceral Surgery, Lausanne University Hospital CHUV, Lausanne, Switzerland
| | - Gaëtan-Romain Joliat
- Department of Visceral Surgery, Lausanne University Hospital CHUV, Lausanne, Switzerland; Graduate School for Health Sciences, University of Bern, Switzerland
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