Lymphoblastic cells in serous effusions in fetal hydrops mimicking acute lymphoblastic leukaemia: A report of two cases

摘要

Two cases of pleural effusion in neonates with fetal hydrops are reported. In both, the cytomorphology mimicked acute lymphoblastic leukaemia (ALL). However, immunocytochemistry and the examination of cord blood revealed reactive lymphocytes. Cytopathologists should be aware of this pitfall, which highlights the need to immunophenotype cells in such fluids.