Background: Neoadjuvant therapy (NAT) is used in borderline resectable/locally advanced (BR/LA) pancreatic ductal adenocarcinoma (PDAC). Anatomic imaging (CT/MRI) poorly predicts response, and biochemical (CA 19-9) markers are not useful (nonsecretors/nonelevated) in many patients. Pathologic response highly predicts survival post-NAT, but is only known postoperatively. Because metabolic imaging (FDG-PET) reveals primary tumor viability, this study aimed to evaluate our experience with preoperative FDG-PET in patients with BR/LA PDAC in predicting NAT response and survival. Methods: We reviewed all patients with resected BR/LA PDAC who underwent NAT with FDG-PET within 60 days of resection. Pre- and post-NAT metabolic (FDG-PET) and biochemical (CA 19-9) responses were dichotomized in addition to pathologic responses. We compared post-NAT metabolic and biochemical responses as preoperative predictors of pathologic responses and recurrence-free survival (RFS) and overall survival (OS). Results: We identified 202 eligible patients. Post-NAT, 58% of patients had optimization of CA 19-9 levels. Major metabolic and pathologic responses were present in 51% and 38% of patients, respectively. Median RFS and OS times were 21 and 48.7 months, respectively. Metabolic response was superior to biochemical response in predicting pathologic response (area under the curve, 0.86 vs 0.75; P<.001). Metabolic response was the only univariate preoperative predictor of OS (odds ratio, 0.25; 95% CI, 0.13–0.40), and was highly correlated (P=.001) with pathologic response as opposed to biochemical response alone. After multivariate adjustment, metabolic response was the single largest independent preoperative predictor (P<.001) for pathologic response (odds ratio, 43.2; 95% CI, 16.9–153.2), RFS (hazard ratio, 0.37; 95% CI, 0.2–0.6), and OS (hazard ratio, 0.21; 95% CI, 0.1–0.4). Conclusions: Among patients with post-NAT resected BR/LA PDAC, FDG-PET highly predicts pathologic response and survival, superior to biochemical responses alone. Given the poor ability of anatomic imaging or biochemical markers to assess NAT responses in these patients, FDG-PET is a preoperative metric of NAT efficacy, thereby allowing potential therapeutic alterations and surgical treatment decisions. We suggest that FDG-PET should be an adjunct and recommended modality during the NAT phase of care for these patients.
Amro M. Abdelrahman, Ajit H. Goenka, Roberto Alva-Ruiz, Jennifer A. Yonkus, Jennifer L. Leiting, Rondell P. Graham, Kenneth W. Merrell, Cornelius A. Thiels, Christopher L. Hallemeier, Susanne G. Warner, Michael G. Haddock, Travis E. Grotz, Nguyen H. Tran, Rory L. Smoot, Wen Wee Ma, Sean P. Cleary, Robert R. McWilliams, David M. Nagorney, Thorvardur R. Halfdanarson, Michael L. Kendrick, and Mark J. Truty
Matthew H. Kulke, Manisha H. Shah, Al B. Benson III, Emily Bergsland, Jordan D. Berlin, Lawrence S. Blaszkowsky, Lyska Emerson, Paul F. Engstrom, Paul Fanta, Thomas Giordano, Whitney S. Goldner, Thorvardur R. Halfdanarson, Martin J. Heslin, Fouad Kandeel, Pamela L. Kunz, Boris W. Kuvshinoff II, Christopher Lieu, Jeffrey F. Moley, Gitonga Munene, Venu G. Pillarisetty, Leonard Saltz, Julie Ann Sosa, Jonathan R. Strosberg, Jean-Nicolas Vauthey, Christopher Wolfgang, James C. Yao, Jennifer Burns, and Deborah Freedman-Cass
Neuroendocrine tumors (NETs) comprise a broad family of tumors that may or may not be associated with symptoms attributable to hormonal hypersecretion. The NCCN Clinical Practice Guidelines in Oncology for Neuroendocrine Tumors discuss the diagnosis and management of both sporadic and hereditary NETs. This selection from the guidelines focuses on sporadic NETs of the pancreas, gastrointestinal tract, lung, and thymus.
Manisha H. Shah, Whitney S. Goldner, Al B. Benson III, Emily Bergsland, Lawrence S. Blaszkowsky, Pamela Brock, Jennifer Chan, Satya Das, Paxton V. Dickson, Paul Fanta, Thomas Giordano, Thorvardur R. Halfdanarson, Daniel Halperin, Jin He, Anthony Heaney, Martin J. Heslin, Fouad Kandeel, Arash Kardan, Sajid A. Khan, Boris W. Kuvshinoff II, Christopher Lieu, Kimberly Miller, Venu G. Pillarisetty, Diane Reidy, Sarimar Agosto Salgado, Shagufta Shaheen, Heloisa P. Soares, Michael C. Soulen, Jonathan R. Strosberg, Craig R. Sussman, Nikolaos A. Trikalinos, Nataliya A. Uboha, Namrata Vijayvergia, Terence Wong, Beth Lynn, and Cindy Hochstetler
The NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines) for Neuroendocrine and Adrenal Gland Tumors focus on the diagnosis, treatment, and management of patients with neuroendocrine tumors (NETs), adrenal tumors, pheochromocytomas, paragangliomas, and multiple endocrine neoplasia. NETs are generally subclassified by site of origin, stage, and histologic characteristics. Appropriate diagnosis and treatment of NETs often involves collaboration between specialists in multiple disciplines, using specific biochemical, radiologic, and surgical methods. Specialists include pathologists, endocrinologists, radiologists (including nuclear medicine specialists), and medical, radiation, and surgical oncologists. These guidelines discuss the diagnosis and management of both sporadic and hereditary neuroendocrine and adrenal tumors and are intended to assist with clinical decision-making. This article is focused on the 2021 NCCN Guidelines principles of genetic risk assessment and counseling and recommendations for well-differentiated grade 3 NETs, poorly differentiated neuroendocrine carcinomas, adrenal tumors, pheochromocytomas, and paragangliomas.
Manisha H. Shah, Whitney S. Goldner, Thorvardur R. Halfdanarson, Emily Bergsland, Jordan D. Berlin, Daniel Halperin, Jennifer Chan, Matthew H. Kulke, Al B. Benson III, Lawrence S. Blaszkowsky, Jennifer Eads, Paul F. Engstrom, Paul Fanta, Thomas Giordano, Jin He, Martin J. Heslin, Gregory P. Kalemkerian, Fouad Kandeel, Sajid A. Khan, Wajih Zaheer Kidwai, Pamela L. Kunz, Boris W. Kuvshinoff II, Christopher Lieu, Venu G. Pillarisetty, Leonard Saltz, Julie Ann Sosa, Jonathan R. Strosberg, Craig A. Sussman, Nikolaos A. Trikalinos, Nataliya A. Uboha, Jonathan Whisenant, Terence Wong, James C. Yao, Jennifer L. Burns, Ndiya Ogba, and Griselda Zuccarino-Catania
The NCCN Guidelines for Neuroendocrine and Adrenal Tumors provide recommendations for the management of adult patients with neuroendocrine tumors (NETs), adrenal gland tumors, pheochromocytomas, and paragangliomas. Management of NETs relies heavily on the site of the primary NET. These NCCN Guidelines Insights summarize the management options and the 2018 updates to the guidelines for locoregional advanced disease, and/or distant metastasis originating from gastrointestinal tract, bronchopulmonary, and thymus primary NETs.