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Case Reports in Pulmonology
Volume 2012, Article ID 257827, 2 pages
Case Report

EGFR-Mutant Lung Adenocarcinoma Mimicking a Pneumonia

1Medical Oncology Department, Hospital del Mar-Parc de Salut Mar, Passeig Maritim 25-29, 08003 Barcelona, Spain
2Radiology Department, IDIMAS-CRC, Hospital del Mar, Passeig Maritim 25-29, 08003 Barcelona, Spain
3PET Unit Molecular Imaging Center, CRC CIM-CRC Mar, Passeig Maritim 25-29, 08003 Barcelona, Spain

Received 3 April 2012; Accepted 13 July 2012

Academic Editors: F. L. Fimognari and M. Ip

Copyright © 2012 Álvaro Taus et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


PET-CT scan has demonstrated to be very effective in lung cancer diagnosis and staging, but lung cancer has multiple ways of presentation, which can lead to an error in diagnosis imaging and a delay on the beginning of specific treatment. We present a case of a 77-year-old man with an initial PET-CT scan showing high 18F-FDG intake, suggesting a bilateral pneumonia, who was finally diagnosed of an EGFR-mutant lung adenocarcinoma. EGFR-activating mutation allowed us to start treatment with the oral tyrosin kinase inhibitor Gefitinib, obtaining a rapid and sustained response. Histological confirmation of imaging findings is always necessary to avoid diagnostic errors.