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Ann Thorac Surg 2004;78:1742-1747
© 2004 The Society of Thoracic Surgeons
a University of Milan, Milan, Italy
Accepted for publication April 27, 2004.
* Address reprint requests to Dr Raveglia, Piazza Leonardo da Vinci 7, 20133 Milan, Italy
ravegliafederico{at}tiscali.it
BACKGROUND: Pleomorphic carcinoma is a rare epithelial malignant tumor. Pulmonary pleomorphic carcinoma was introduced by the 1999 World Health Organization classification as a new peculiar type of lung carcinoma showing concurrent malignant epithelial and sarcomatoid spindle cell elements. Few reports describe its clinical behavior. My colleagues and I report a series of patients surgically treated for pulmonary pleomorphic carcinoma to describe our experience with this malignant neoplasm.
METHODS: Twenty cases of pleomorphic pulmonary carcinoma were collected and studied clinicopathologically. All patients underwent surgical resection. The cases were as follows: 6 stage I, 12 stage II, and 2 stage IIIA. Histologic diagnosis was established by using light microscopic examination and immunohistochemistry. Survival rates were calculated with the Kaplan-Meier method.
RESULTS: We postoperatively diagnosed 20 cases of pleomorphic carcinoma: 14 cases were exclusively spindle and giant-cell carcinomas, 2 cases were spindle and giant-cell carcinoma combined with adenocarcinoma, 2 were combined with squamous cell carcinoma, and 2 were combined with large cell carcinoma. At last follow-up, 4 patients were still alive; they were postoperative T1 N0 and T2 N0. The remaining 16 patients died from early distant metastases. The median duration of disease-free survival was 5 months. The median duration of overall survival was 8 months.
CONCLUSIONS: The prognosis of patients with pleomorphic carcinoma was poor, despite surgery and adjuvant chemotherapy, because of early relapse of disease. Nodal involvement was a determinant prognostic variable, because advanced stages were related to worse prognosis. In case of preoperatively proven pulmonary pleomorphic carcinoma, surgery should be recommended to N0 patients.
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