18F-FDG PET/CT images of adult pulmonary blastoma: a case report

Abstract

A 67-year-old man was revealed a right upper lung nodule by accident during a chest CT examination 6 years ago, without any symptoms. The patient did not pay more attention to the pulmonary nodule and received no further treatment. Three years later, the patient presented with chest pain. A Chest contrast-enhanced CT showed a lobulated mass in the upper lobe of the right lung, with mild heterogeneous enhancement, and the upper edge of the mass locally invaded adjacent pleura. The patient underwent CT-guided needle biopsy, histopathological and immunohistochemical findings were consistent with diagnosis of pulmonary blastoma. Supplementary IHC of PD-L1(22C3) and PD-L1(E1L3N) were negative. In this case, we present the images of 18F-FDG PET/CT about a rare thoracic malignancy, pulmonary blastoma in adulthood, before and after chemotherapy and immunotherapy, which has never been reported before.