Unusual Presentation of Pre-T Cell Acute Lymphoblastic Leukemia: Massive Pericardial Effusion Only.

Despite the infectious and connective tissue diseases are most encountered, etiological factors, pericardial effusions, can also rarely emerge because of malign disease in childhood and it often develops during the course of chemotherapy and radiotherapy. Unfortunately, pericardial involvement is one of the frequently encountered symptoms of pediatric malignancies. Herein, we present a rare case who was admitted with pericardial effusion and whose disease was diagnosed as pre-T cell acute lymphoblastic leukemia without peripheral blood involvement.