Abdalla Dikair

A 23-year-old man with a history of Crohn's disease and liver transplantation for sclerosing cholangitis developed pancytopenia during corticosteroid therapy. His blood count showed hemoglobin concentration 81 g/L, white cell count 7.1 × 109/L, neutrophils 0.7 × 109/L, and platelets 34 × 109/L. His blood film showed a population of medium sized lymphoid cells with a high nucleocytoplasmic ratio, some with prominent nucleoli and vacuolation (top left, all images ×100 objective).