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KMID : 0383820100680050290
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Tuberculosis and Respiratory Diseases
2010 Volume.68 No. 5 p.290 ~ p.293
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Prostatic Cancer Presenting as an Isolated Large Lung Mass
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No Hee-Sun
Lee Jong-Hwan
Ahn Young
Na Im-Il
Kim Hye-Ryoun
Kim Cheol-Hyeon
Koh Jae-Soo
Lee Jae-Cheol
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Abstract
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A hidden primary tumor presenting as an isolated lung mass is a diagnostic challenge to physicians because the diagnosis of lung cancer is likely to be made if the histologic findings are not inconsistent with lung cancer. A large lung mass was found incidentally in a 59-year-old man. Although adenocarcinoma was diagnosed by percutaneous needle biopsy, thyroid transcription factor-1 (TTF-1) immunostaining was negative, raising suspicion that there was another primary site. There was no abnormal finding except for the lung mass on a 18FDG-PET/CT scan and the patient did not complain of any discomfort. Finally, prostatic cancer was confirmed through the study of tumor markers and prostate-specific antigen (PSA) immunostaining. Because of the rare presentation of a single lung mass in malignancies that have another primary site, physicians should carefully review all data before making a final diagnosis of lung cancer.
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KEYWORD
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Metastasis, Prostatic Neoplasms, Thyroid Transcription Factor 1, Tumor Markers, Biological
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