Desmoplastic small round cell tumor (DSRCT) is an aggressive malignancy usually described in the abdomen and pelvis of adolescent males but rarely chest. A 71-year-old male presented with chest pain was found to have pericardial effusion cardiac tamponade. He underwent pericardiocentesis window. Pericardial fluid biopsy results confirmed DSRCT. The patient received P6 protocol a good bri...