Challenging case of pleuropericardial effusion: Primary extraskeletal Ewing's sarcoma masquerading as tubercular pericarditis.

Ewing's sarcoma is an aggressive bone and soft tissue cancer of children and young adults, which can rarely affect extraskeletal soft tissues and visceral organs as extraskeletal Ewing's sarcoma (EES). Primary EES of the pleura and pericardium is an extremely rare malignancy, and herein we report a case of Primary EES of the pericardium, which to the best of our knowledge is the first case report of the same from India.