INTRODUCTION Thrombotic microangiopathies constitute a heterogeneous group of diseases characterised by microangiopathic haemolytic anaemia and thrombocytopaenia associated with platelet aggregation in the microcirculation responsible for ischaemic manifestations. Classically, thrombotic microangiopathies are described as encompassing two main syndromes: thrombotic thrombocytopaenic purpura and...

Human parvovirus B19 is considered an etiologic agent of aplastic anemia in immunosuppressed patients. Microscopic vasculitis, with or without renal involvement, has recently been attributed to this viral infection in immunocompetent patients. This study describes four cases of thrombotic renal graft microangiopathy presumably secondary to B19 infection. Twelve to 50 days after transplantation,...

Thrombotic thrombocytopenic purpura (TTP) is a rare variant of thrombotic microangiopathy. We report case TTP in Nigerian chronic kidney disease (CKD) patient who was previously on clopidogrel. The features resolved soon after clopidogrel withdrawn. Clopidogrel cardio-protective anti-platelet drug used CKD patients at risk dyspepsia. However, its potential to cause should be recognized and cons...

Thrombotic thrombocytopenic purpura (TTP) is a severe disease, potentially fatal, if not diagnosed and treated promptly. TTP is clinically characterized by the pentad of thrombocytopenia, Coombs-negative hemolytic anemia, fever, renal abnormalities and neurological disturbances. Advances in recent years have delineated the molecular mechanisms of acquired and hereditary TTP.Many infectious orga...

objective: thrombotic thrombocytopenic purpura (ttp) is the most malignant variant of microangiopathy that usually presents by typical symptoms including thrombocytopenia, hemolytic anemia, neurological abnormalities, fever and renal impairment. report of the case: we report a 12-year-old male presented by cytopenia, fever, purpura on his extremities, seizure and lethargy. peripheral blood smea...

It is currently recognized that the pathogenesis of malignancy-associated thrombotic microangiopathy (TMA) is distinct from thrombotic thrombocytopenic purpura. This carries important implications in its classification and its management. Here, we report a case of occult malignancy presenting initially as acute kidney injury secondary to TMA and highlight the importance of considering an underl...