RESUMEN
Familial erythrocytosis is a heterogeneous group of hereditary conditions with an increased total red blood cell volume. The disease occurs in a familial pattern and follows a relatively benign course. The absence of leukocytosis and thrombocytosis differentiates it from polycythemia vera. The best characterized primary erythrocytosis is the autosomal dominant primary familial and congenital polycythemia. In most families, erythrocytosis is due to abnormal hemoglobin with increased oxygen affi nity. In other families, erythrocytosis is caused by an autonomous production of erythropoietin [EPO]. EPO receptor gene mutations are also responsible for erythrocytosis when no secondary causes are apparent. Presented herein is a family with familial erythrocytosis possibly due to high autonomous production of EPO, which as per the literature is the fi rst of its kind in the Indian context
RESUMEN
Hairy cell leukaemia variant is a very rare chronic lymphoproliferative disorder and is closely related to hairy cell leukemia. We hereby describe a case of hairy cell leukaemia variant for the first time in Saudi Arabia. An elderly Saudi man presented with pallor, massive splenomegaly, and moderate hepatomegaly. Hemoglobin was 7.7 g/dl, Platelets were 134 x109/l and white blood count was 140x10 9/l with 97% being abnormal lymphoid cells with cytoplasmic projections. The morphology, cytochemistry, and immunophenotype of the lymphoid cells were classical of hairy cell leukaemia variant. The bone marrow was easily aspirated and findings were consistent with hairy cell leukaemia variant