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Pulmonary blastoma: A comprehensive overview of a rare entity
Authors
I. Tsamis Chachali, S.-P. Gomatou, G. Trontzas, I. Mitsogianni, M. Syrigos, N. Vamvakaris, I. Kotteas, E.
Publication date
1 January 2021
Publisher
Abstract
Introduction: Pulmonary blastoma is a rare malignancy, accounting for less than 0.5% of primary lung tumors. It belongs to the group of pulmonary sarcomatoid carcinomas, and it is typically characterized by a biphasic pattern of an epithelial and a mes-enchymal component. Only a few hundred cases have been reported worldwide. The aim of this study is to review and critically assess the literature regarding pulmonary blastoma. Material and methods: A narrative literature review of PubMed database from the inception of the database up to January 2021, limited to the English language, was conducted, using combinations of the following keywords: “pulmonary blastoma”, “biphasic pulmonary blastoma”, “sarcomatoid carcinoma”. Results: Pulmonary blastoma is composed of an epithelial and a mesenchymal malignant component. Regarding pathogenesis, the origin of the biphasic cell population remains elusive. Characteristic immunohistochemical stains are supportive of diagno-sis. Clinically, the symptomatology is non-specific, while 40% of the cases are asymptomatic. It is diagnosed at a younger age compared to other types of lung cancer, and it is often non-metastatic at diagnosis allowing for surgical treatment. Data on management and survival are scarce and mainly come from isolated cases. Advances on targeted therapy may provide novel treatment options. Given the rarity of the cases, multicenter collaboration is needed in order to establish therapeutic guidelines. © 2021 PTChP
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Last time updated on 10/02/2023