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Nikolaos A. Trikalinos, Amy Zhou, Maria B. Majella Doyle, Kathryn J. Fowler, Ashley Morton, Neeta Vachharajani, Manik Amin, Jesse W. Keller, William C. Chapman, Elizabeth M. Brunt, and Benjamin R. Tan

Background: Combined hepatocellular-cholangiocarcinoma tumors (cHCC-CCA) are a heterogeneous group of rare malignancies that have no established optimal treatment. Patients and Methods: We identified patients with cHCC-CCA treated at a tertiary center and retrospectively examined their histology, interventions, and outcomes. We calculated disease control rate (DCR), disease progression, overall survival, and progression-free survival (PFS) between treatment subgroups. Results: A total of 123 patients were evaluable. Interventions included resection, locoregional therapy, transplant, chemotherapy, and targeted agents. Ultimately, 68 patients received systemic treatment—57 with gemcitabine plus either 5-fluoropyrimidine (5-FU) or a platinum combination. Disease progression was more common in the gemcitabine/5-FU group versus gemcitabine/platinum (P=.028), whereas DCR favored gemcitabine/platinum (78.4% vs 38.5%; P=.0143). Median PFS from time of initial diagnosis favored the gemcitabine/platinum group, but the difference did not reach statistical significance. Targeted agents had minimal to no effect on survival metrics. Conclusions: Gemcitabine/platinum seems to be a superior regimen for patients with cHCC-CCA who require systemic treatment. Further studies are needed to clarify the regimen's efficacy and applicability in patient subgroups.

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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.

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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.