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Arjun Gupta, Raseen Tariq, Ryan D. Frank, Gary W. Jean, Muhammad S. Beg, Darrell S. Pardi, David H. Johnson and Sahil Khanna

Background: Patients with cancer have several risk factors for Clostridium difficile infection (CDI), but the impact of CDI on outcomes in this population needs elucidation. We analyzed the incidence of CDI and its impact on outcomes in patients with cancer using the National Hospital Discharge Survey (NHDS) database from 2001 to 2010. Methods: Diagnosis codes were used to identify patients with cancer and CDI events. Demographics, diagnoses, length of stay (LOS), and discharge information were abstracted. Multivariate linear and logistic regression models with weighted analysis were conducted to study CDI incidence and CDI-associated outcomes. Analyses were performed using SAS version 9.4. Results: During the 10-year study period, 20.1 million discharges had a cancer diagnosis. CDI developed in 1.09% of patients with cancer versus 0.77% of patients without cancer (adjusted odds ratio [aOR], 1.28; 95% CI, 1.28–1.29; P<.001). The incidence of CDI in patients with cancer increased during the 10-year study period (64.7 per 10,000 discharges in 2001–2002 to 109.1 in 2009–2010; P<.001). In multivariable analysis, compared with patients with cancer without CDI, patients with cancer and CDI had a longer mean LOS (5.67 days; 95% CI, 5.39–5.94) and higher rates of in-hospital mortality (aOR, 1.18; 95% CI, 1.16–1.20) and discharge to a care facility (aOR, 1.74; 95% CI, 1.72–1.75; all P<.001). Conclusions: In this national database, CDI incidence increased significantly in patients with cancer over the study period and was associated with prolonged hospitalization, increased mortality, and discharge to a care facility. Despite increased attention, CDI remained a serious infection and merits appropriate prevention and management.

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Timothy Gilligan, Daniel W. Lin, Rahul Aggarwal, David Chism, Nicholas Cost, Ithaar H. Derweesh, Hamid Emamekhoo, Darren R. Feldman, Daniel M. Geynisman, Steven L. Hancock, Chad LaGrange, Ellis G. Levine, Thomas Longo, Will Lowrance, Bradley McGregor, Paul Monk, Joel Picus, Phillip Pierorazio, Soroush Rais-Bahrami, Philip Saylor, Kanishka Sircar, David C. Smith, Katherine Tzou, Daniel Vaena, David Vaughn, Kosj Yamoah, Jonathan Yamzon, Alyse Johnson-Chilla, Jennifer Keller and Lenora A. Pluchino

Testicular cancer is relatively uncommon and accounts for <1% of all male tumors. However, it is the most common solid tumor in men between the ages of 20 and 34 years, and the global incidence has been steadily rising over the past several decades. Several risk factors for testicular cancer have been identified, including personal or family history of testicular cancer and cryptorchidism. Testicular germ cell tumors (GCTs) comprise 95% of malignant tumors arising in the testes and are categorized into 2 main histologic subtypes: seminoma and nonseminoma. Although nonseminoma is the more clinically aggressive tumor subtype, 5-year survival rates exceed 70% with current treatment options, even in patients with advanced or metastatic disease. Radical inguinal orchiectomy is the primary treatment for most patients with testicular GCTs. Postorchiectomy management is dictated by stage, histology, and risk classification; treatment options for nonseminoma include surveillance, systemic therapy, and nerve-sparing retroperitoneal lymph node dissection. Although rarely occurring, prognosis for patients with brain metastases remains poor, with >50% of patients dying within 1 year of diagnosis. This selection from the NCCN Guidelines for Testicular Cancer focuses on recommendations for the management of adult patients with nonseminomatous GCTs.

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David S. Ettinger, Wallace Akerley, Gerold Bepler, Matthew G. Blum, Andrew Chang, Richard T. Cheney, Lucian R. Chirieac, Thomas A. D'Amico, Todd L. Demmy, Ramaswamy Govindan, Frederic W. Grannis Jr., Thierry Jahan, David H. Johnson, Anne Kessinger, Ritsuko Komaki, Feng-Ming Kong, Mark G. Kris, Lee M. Krug, Quynh-Thu Le, Inga T. Lennes, Renato Martins, Janis O'Malley, Raymond U. Osarogiagbon, Gregory A. Otterson, Jyoti D. Patel, Katherine M. Pisters, Karen Reckamp, Gregory J. Riely, Eric Rohren, Scott J. Swanson, Douglas E. Wood and Stephen C. Yang

Overview Masses in the anterior mediastinum include neoplasms (e.g., thymomas, lymphomas, thymic carcinomas, thymic carcinoids, thymolipomas, germ cell tumors, parathyroid adenomas) or nonneoplastic conditions (e.g., intrathoracic goiter, thymic cysts, lymphangiomas, aortic aneurysms).1,2 Thymomas are the most common tumor in the anterior mediastinum.1,3,4 Many mediastinal masses are benign, especially those occurring in asymptomatic patients; however, symptomatic patients often have malignant mediastinal lesions. These guidelines outline the evaluation, treatment, and management of thymomas and thymic carcinomas (see Thymic Masses, opposite column). The WHO histologic classification system can be used to distinguish among thymomas, thymic carcinomas, and thymic carcinoids.3 Lymphomas typically manifest as generalized disease but can also be primary anterior mediastinal lesions (i.e., nodular sclerosing Hodgkin disease and non-Hodgkin's lymphomas [large B-cell lymphoma and lymphoblastic lymphoma]); patients typically have lymphadenopathy [see the NCCN Clinical Practice Guidelines in Oncology {NCCN Guidelines} for Non-Hodgkin's Lymphomas and Hodgkin Lymphoma].2,5 Thymic carcinoids are rare tumors that are discussed in the NCCN Guidelines for Neuroendocrine Tumors. Teratomas are discussed in the NCCN Guidelines for Testicular Cancer. (To view the most recent version of these guidelines, visit the NCCN Web site at Thymic Masses All patients with a mediastinal mass should undergo studies to determine the type of mass and extent of disease; these tests should include chest CT with contrast, fludeoxyglucose (FDG)–PET, radiolabeled octreotide scan (optional), complete blood cell counts, and platelets. Pulmonary function tests and MRI of the chest can also be done if clinically indicated. On CT, thymoma can look like malignant mesothelioma; however,...
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David S. Ettinger, Wallace Akerley, Gerold Bepler, Matthew G. Blum, Andrew Chang, Richard T. Cheney, Lucian R. Chirieac, Thomas A. D'Amico, Todd L. Demmy, Apar Kishor P. Ganti, Ramaswamy Govindan, Frederic W. Grannis Jr., Thierry Jahan, Mohammad Jahanzeb, David H. Johnson, Anne Kessinger, Ritsuko Komaki, Feng-Ming Kong, Mark G. Kris, Lee M. Krug, Quynh-Thu Le, Inga T. Lennes, Renato Martins, Janis O'Malley, Raymond U. Osarogiagbon, Gregory A. Otterson, Jyoti D. Patel, Katherine M. Pisters, Karen Reckamp, Gregory J. Riely, Eric Rohren, George R. Simon, Scott J. Swanson, Douglas E. Wood and Stephen C. Yang

Overview Lung cancer is the leading cause of cancer-related death in the United States. An estimated 219,440 new cases (116,090 men; 103,350 women) of lung and bronchus cancer were diagnosed in 2009, and 159,390 deaths (88,900 men; 70,490 women) occurred from the disease.1 Only 15% of all lung cancer patients are alive 5 years or more after diagnosis ( Common symptoms of lung cancer include cough, dyspnea, weight loss, and chest pain; symptomatic patients are more likely to have chronic obstructive pulmonary disease. The primary risk factor for lung cancer is smoking, which accounts for more than 85% of all lung cancer-related deaths.2 The risk for lung cancer increases with the number of cigarettes smoked per day and the number of years spent smoking. In addition to the hazard of first-hand smoke, exposed nonsmokers have an increased relative risk for developing lung cancer.3 Radon gas, a radioactive gas that is produced by the decay of radium 226, is the second leading cause of lung cancer.4 The decay of this isotope leads to the production of substances that emit alpha-particles, which may cause cell damage and therefore increase the potential for malignant transformation. Data suggest that postmenopausal women who smoke or are former smokers should not undergo hormone replacement therapy, because it increases the risk for death from non–small cell lung cancer (NSCLC).5 Asbestos, a mineral compound that breaks into small airborne shards, is a known carcinogen that increases the risk for lung cancer in people exposed to the airborne fibers,...
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Peter L. Greenberg, Richard M. Stone, Aref Al-Kali, Stefan K. Barta, Rafael Bejar, John M. Bennett, Hetty Carraway, Carlos M. De Castro, H. Joachim Deeg, Amy E. DeZern, Amir T. Fathi, Olga Frankfurt, Karin Gaensler, Guillermo Garcia-Manero, Elizabeth A. Griffiths, David Head, Ruth Horsfall, Robert A. Johnson, Mark Juckett, Virginia M. Klimek, Rami Komrokji, Lisa A. Kujawski, Lori J. Maness, Margaret R. O'Donnell, Daniel A. Pollyea, Paul J. Shami, Brady L. Stein, Alison R. Walker, Peter Westervelt, Amer Zeidan, Dorothy A. Shead and Courtney Smith

The myelodysplastic syndromes (MDS) comprise a heterogenous group of myeloid disorders with a highly variable disease course. Diagnostic criteria to better stratify patients with MDS continue to evolve, based on morphology, cytogenetics, and the presence of cytopenias. More accurate classification of patients will allow for better treatment guidance. Treatment encompasses supportive care, treatment of anemia, low-intensity therapy, and high-intensity therapy. This portion of the guidelines focuses on diagnostic classification, molecular abnormalities, therapeutic options, and recommended treatment approaches.

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John A. Thompson, Bryan J. Schneider, Julie Brahmer, Stephanie Andrews, Philippe Armand, Shailender Bhatia, Lihua E. Budde, Luciano Costa, Marianne Davies, David Dunnington, Marc S. Ernstoff, Matthew Frigault, Benjamin H. Kaffenberger, Matthew Lunning, Suzanne McGettigan, Jordan McPherson, Nisha A. Mohindra, Jarushka Naidoo, Anthony J. Olszanski, Olalekan Oluwole, Sandip P. Patel, Nathan Pennell, Sunil Reddy, Mabel Ryder, Bianca Santomasso, Scott Shofer, Jeffrey A. Sosman, Yinghong Wang, Ryan M. Weight, Alyse Johnson-Chilla, Griselda Zuccarino-Catania and Anita Engh

The NCCN Guidelines for Management of Immunotherapy-Related Toxicities provide interdisciplinary guidance on the management of immune-related adverse events (irAEs) resulting from cancer immunotherapy. These NCCN Guidelines Insights describe symptoms that may be caused by an irAE and should trigger further investigation, and summarize the NCCN Management of Immunotherapy-Related Toxicities Panel discussions for the 2020 update to the guidelines regarding immune checkpoint inhibitor–related diarrhea/colitis and cardiovascular irAEs.