Stage IV non–small cell lung cancer (NSCLC) Stage IV non–small cell lung cancer (NSCLC). Upon evaluation for back pain, this patient was found to have a pleural effusion (A, B), and biopsy revealed NSCLC. Positron emission tomography/computed tomography (C) revealed a 5.4- by 3.6-cm hypermetabolic mass in the right middle lobe, many small satellite fluorodeoxyglucose (FDG)-avid right lung nodules, and extensive FDG-avid pleural-based masses on the right (T4N0M1). No disease was found outside the chest. Source: Non–Small Cell Lung Cancer, The MD Anderson Manual of Medical Oncology, 3e Citation: Kantarjian HM, Wolff RA. The MD Anderson Manual of Medical Oncology, 3e; 2016 Available at: http://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/books/1772/kantmmo3_ch18_f017.png&sec=121898440&BookID=1772&ChapterSecID=121898346&imagename= Accessed: October 21, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved