Tumor-To-tumor Metastasis: Prostatic Cancer Metastasizing to Malignant Solitary Fibrous Tumor of The Lung

Abstract

<jats:title>Abstract</jats:title> <jats:p><jats:bold>Background: </jats:bold>Tumor-to-tumor metastasis is an extremely rare but interesting phenomenon. Prostatic cancer metastasizing to malignant solitary fibrous tumor (SFT) of the lung has not been previously reported.<jats:bold>Case Presentation: </jats:bold>In this report, we describe the case of a 60-year-old man presenting a large solitary neoplasm in the left lung on computed tomography. Pathology after left lung wedge resection indicated two different cancerous cell components: SFT cells with malignant potential and prostatic cancer cells. The heterogeneous cells of prostatic origin were confirmed by using evidence from fine needle aspiration and pathology after radical prostatectomy.<jats:bold>Conclusions:</jats:bold> We report the first tumor-to-tumor metastasis of prostatic cancer to lung malignant SFT.</jats:p>