Thrombotic microangiopathy (TMA) is a known complication of HIV infection. Endothelial cell injury appears to be the primary event causing platelet activation and deposition in the microvasculature. Direct cytopathic roles of HIV as well as other factors such as malignancy, drugs, and infectious agents have been implicated in the pathogenesis of HIV-TMA. Although the the majority of patients pr...

Pulmonary tumor thrombotic microangiopathy (PTTM) is a rare clinical entity where tumor cell embolisms in pulmonary circulation induce thrombotic microangiopathy (TMA), respiratory failure, and subacute cor pulmonale. We describe 3 cases of PTTM that presented as the initial manifestation of metastatic gastric adenocarcinoma with TMA and pulmonary infiltrates. All 3 cases had similar clinical a...

The thrombotic microangiopathies (TMA) are a group of common microvascular occlusive disorders characterized by thrombocytopenia, microangiopathic hemolysis and multiorgan dysfunction. The pathological features are vascular damage manifested by arteriolar and capillary thrombosis with characteristic abnormalities in the endothelium and vessel wall. Pregnancy associated TMA is a life threatening...

Thrombotic microangiopathy is characterized by microvascular thrombosis coupled with thrombocytopenia, hemolytic anemia, and red blood cell fragmentation. Familiar to nephrologists and hematologists alike, classically associated with thrombotic microangiopathy are the hemolytic-uremic syndrome (HUS) and thrombotic thrombocytopenic purpura (TTP), the histories and presentations of which are clos...

We describe a case of a 45-year-old woman with progressive chronic kidney disease (CKD), macrocytic anaemia without fragments or thrombocytopaenia, and thrombotic microangiopathy on renal biopsy. 'A disintegrin and metalloprotease, with thrombospondin-1-like domains' (ADAMTS-13) deficiency was detected, and genotyping revealed single-nucleotide polymorphisms known to be associated with reduced ...

The thrombotic microangiopathy observed in malignant hypertension is similar to that of thrombotic thrombocytopenic purpura, which is associated with a deficiency of ADAMTS13, a von Willebrand factor (VWF)-cleaving protease that cleaves large prothrombogenic multimers. We hypothesized that ADAMTS13 is deficient in malignant hypertension and that the severity of thrombotic microangiopathy is ass...

Cancer-associated thrombotic microangiopathy refers to a group of disorders characterised by microvascular thrombosis, thrombocytopenia, and ischaemic end-organ damage. Haemolytic uraemic syndrome and thrombotic thrombocytopenic purpura are the two major subtypes. It can be a manifestation of the malignancy itself or a complication of its therapy. The addition of several new drugs to the therap...