A Rare Case of Neutrophil-Rich, ALK-Negative Anaplastic Large Cell Lymphoma in the Lung Mimicking a Pulmonary Abscess on 18F-FDG PET/CT

A 21-year-old man complained of cough, fever, and hemoptysis for 15 days. Peripheral neutrophil cell (33.8 × 109/L) was markedly increased, and a mass in the left lung was detected by chest radiography. 18F-FDG PET/CT was referred for characterizing the lesion and found a large mass with multiple cavities in the left lung, which had markedly high uptake of 18F-FDG, mimicking pulmonary abscess. Surprisingly, the lesion was eventually proved to be neutrophil-rich anaplastic large cell lymphoma. After 4 cycles' chemotherapy, the lesion shrank significantly. Received for publication August 20, 2018; revision accepted September 18, 2018. Conflicts of interest and sources of funding: none declared. Correspondence to: Quan-Shi Wang, MD, PhD, PET Center, Nanfang Hospital, Southern Medical University, No. 1838 Guangzhoudadao Ave No, Guangzhou, Guangdong 510515, China. E-mail: wqslph@163.net. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.

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