Pseudomesotheliomatous carcinoma

Sarcomatoid renal cell carcinomas can metastasize to the pleura in a macroscopic distribution identical to mesothelioma and very closely simulate a sarcomatoid mesothelioma.This tumor is considered as a pseu-domesotheliomatous carcinoma but not a primary pulmonary pseudomesotheliomatous carcinoma. The immunostaining pattern of such neoplasms can be identical to a sarcomatoid mesothelioma. The situation can be further complicated because sarcomatoid mesotheliomas can metastasize to the kidney. If an individual is known to have a sarcomatoid renal cell carcinoma and has a spindle cell neoplasm of the pleura, one must consider... 

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Attanoos RL, Gibbs AR. Pseudomesotheliomatous carcinomas of the pleura A 10-year analysis of cases from the Environmental Lung Disease Research Group. Cardiff Histopathol. 2003 43 444-452. 

Robb JA, Hammar SP, Yokoo H. 1993. Pseudomesotheliomatous lung carcinoma a rare asbestos-related malignancy readily separable from epithelial pleural mesothelioma. 1993 Annual Meeting of the United States and Canadian 68(1) 134A. 

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