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Yasuta S, Kobayashi T, Aizawa H, Takahashi S, Ikeda M, Konishi M, Kojima M, Kuno H, Uesaka K, Morinaga S, Miyamoto A, Toyama H, Takakura N, Sugimachi K, Takayama W. Relationship between surgical R0 resectability and findings of peripancreatic vascular invasion on CT imaging after neoadjuvant S-1 and concurrent radiotherapy in patients with borderline resectable pancreatic cancer. BMC Cancer 2020; 20:1184. [PMID: 33267820 PMCID: PMC7709301 DOI: 10.1186/s12885-020-07698-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/26/2020] [Indexed: 12/23/2022] Open
Abstract
Background Borderline resectable pancreatic cancer (BRPC) is frequently associated with positive surgical margins and a poor prognosis because the tumor is in contact with major vessels. This study evaluated the relationship between the margin-negative (R0) resection rate and findings indicating peripancreatic vascular invasion on multidetector computed tomography (MDCT) imaging after neoadjuvant chemoradiotherapy (NACRT) in patients with BRPC. Methods Twenty-nine BRPC patients who underwent laparotomy after neoadjuvant S-1 with concurrent radiotherapy were studied retrospectively. Peripancreatic major vessel invasion was evaluated based on the length of tumor-vessel contact on MDCT. The R0 resection rates were compared between the progression of vascular invasion (PVI) group and the non-progression of vascular invasion (NVI) group. Results There were 3 patients with partial responses (10%), 25 with stable disease (86%), and 1 with progressive disease (3%) according to the RECISTv1.1 criteria. Regarding vascular invasion, 9 patients (31%) were classified as having PVI, and 20 patients (69%) were classified as having NVI. Of the 29 patients, 27 (93%) received an R0 resection, and all the PVI patients received an R0 resection (9/9; R0 resection rate = 100%) while 90% (18/20) of the NVI patients underwent an R0 resection. The exact 95% confidence interval of risk difference between those R0 resection rates was − 10.0% [− 31.7–20.4%]. Conclusions Patients with BRPC after NACRT achieved high R0 resection rates regardless of the vascular invasion status. BRPC patients can undergo R0 resections unless progressive disease is observed after NACRT. Trial registration UMIN-CTR, UMIN000009172. Registered 23 October 2012
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Affiliation(s)
- Sho Yasuta
- Department of Hepato-biliary Pancreatic Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tatsushi Kobayashi
- Department of Diagnostic Radiology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.
| | - Hidetoshi Aizawa
- Department of Surgery, Jichi Medical University Saitama Medical Center, Saitama, Japan
| | - Shinichiro Takahashi
- Department of Hepato-biliary Pancreatic Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Masafumi Ikeda
- Department of Hepato-biliary Pancreatic Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Masaru Konishi
- Department of Hepato-biliary Pancreatic Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Motohiro Kojima
- Division of Pathology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Hirofumi Kuno
- Department of Diagnostic Radiology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Katsuhiko Uesaka
- Department of Hepato-biliary Pancreatic Surgery, Shizuoka Cancer Center Hospital, Shizuoka, Japan
| | - Soichiro Morinaga
- Department of Hepato-Biliary and Pancreatic Surgery, Kanagawa Cancer Center, Yokohama, Japan
| | - Atsushi Miyamoto
- Department of Hepato-Biliary-Pancreatic Surgery, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Hirochika Toyama
- Department of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | | | - Keishi Sugimachi
- Department of Hepato-Biliary-Pancreatic Surgery, National Hospital Organization Kyusyu Cancer Center, Fukuoka, Japan
| | - Wataru Takayama
- Department of Hepato-Biliary-Pancreatic Surgery, Chiba Cancer Center, Chiba, Japan
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Okada KI, Kawai M, Hirono S, Kojima F, Tanioka K, Terada M, Miyazawa M, Kitahata Y, Iwahashi Y, Ueno M, Hayami S, Murata SI, Shimokawa T, Yamaue H. Diffusion-weighted MRI predicts the histologic response for neoadjuvant therapy in patients with pancreatic cancer: a prospective study (DIFFERENT trial). Langenbecks Arch Surg 2020; 405:23-33. [PMID: 31993737 DOI: 10.1007/s00423-020-01857-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 01/17/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE Pre-operative prediction of histological response to neoadjuvant therapy aids decisions regarding surgical management of borderline resectable pancreatic cancer (BRPC). We elucidate correlation between pre-/post-treatment whole-tumor apparent diffusion coefficient (ADC) value and rate of tumor cell destruction. We newly verify whether post-treatment ADC value at the site of vascular contact predicts R0 resectability of BRPC. METHODS We prospectively reviewed 28 patients with BRPC who underwent diffusion-weighted magnetic resonance imaging before neoadjuvant chemotherapy and surgery. Correlation between the percentage of tumor cell destruction and various parameters was analyzed. Strong parameters were assessed for their ability to predict therapeutic histological response and R0 resectability. RESULTS Pre-/post-treatment whole-tumor ADC value correlated with tumor cell destruction rate by all parameters (R = 0.630/0.714, P < 0.001/< 0.0001). The post-treatment cutoff value of ADC at the site of vascular contact for discriminating histological response of tumor destruction of ≤ 50% and tumor destruction of > 50% was determined at 1.42 × 10-3 mm2/s. It predicts R0 with 88% sensitivity, 50% specificity, and 61% accuracy. For histological response, the post-treatment whole-tumor ADC cutoff value for discriminating between tumor destruction of ≤ 50% and tumor destruction of > 50% was determined at 1.40 × 10-3 mm2/s. It predicts histological response with 100% sensitivity, 81% specificity, and 89% accuracy. It predicts R0 with 88% sensitivity, 70% specificity, and 75% accuracy. CONCLUSIONS Post-treatment whole-tumor ADC value may be a predictor of R0 resectability in patients with BRPC. Tumor cell destruction rate is indicated by the difference between pre-/post-treatment ADC values. This difference is strongly affected by the pre-treatment ADC value. The cutoff value of ADC at the site of vascular contact could not discriminate R0 resectability.
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Affiliation(s)
- Ken-Ichi Okada
- Second Department of Surgery, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Manabu Kawai
- Second Department of Surgery, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Seiko Hirono
- Second Department of Surgery, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Fumiyoshi Kojima
- Department of Human Pathology, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Kensuke Tanioka
- Clinical Study Support Center, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Masaki Terada
- Wakayama Minami Radiology Clinic, Wakayama, 641-0012, Japan
| | - Motoki Miyazawa
- Second Department of Surgery, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Yuji Kitahata
- Second Department of Surgery, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Yoshifumi Iwahashi
- Department of Human Pathology, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Masaki Ueno
- Second Department of Surgery, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Shinya Hayami
- Second Department of Surgery, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Shin-Ichi Murata
- Department of Human Pathology, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Toshio Shimokawa
- Clinical Study Support Center, Wakayama Medical University, Wakayama, 641-8510, Japan
| | - Hiroki Yamaue
- Second Department of Surgery, Wakayama Medical University, Wakayama, 641-8510, Japan.
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