Characteristics and Prognostic Analysis of 69 Patients With Pulmonary Sarcomatoid Carcinoma

Background: Pulmonary sarcomatoid carcinoma (PSC) is a rare malignancy. Methods: A total of 69 patients with PSC treated at a single institution in southern China with long-term follow-up were evaluated in this study. We analyzed the clinical characteristics, immunohistochemical profiles, epidermal growth factor receptor mutation status, K-RAS mutation status, treatments, and prognosis. Results: PSC mainly occurred in young male patients with a history of smoking. Most patients received multimodality treatments and the majority had early-stage disease. The median survival time was 19.1 months, and the 5-year survival rate was 17.4%. The patients without distant metastasis, with normal or higher body mass index (≥18.5), with normal hemoglobin, with smaller tumor size (≤4 cm), and those who received complete resection had significantly better overall survival (P

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