Δευτέρα 27 Νοεμβρίου 2017

Cancer-related microangiopathic haemolytic anaemia

Description

A 71-year-old woman with widely metastatic breast cancer to liver and bone marrow presented with 2 weeks of fatigue. Examination revealed a severely ill-appearing woman in moderate distress with icterus and jaundice. Laboratory investigations revealed profound anaemia (haemoglobin 5.2 g/dL) with appropriate reticulocyte response (14.4%) and a normal platelet count (207x 109/L). Additional tests revealed a lactate dehydrogenase of 2997 IU/L (normal: 140–297 IU/L), negative direct Coombs antiglobulin, an undetectable haptoglobin level, elevated total bilirubin, newly elevated prothrombin time (19.7 s, normal: <14.1 s), elevated fibrin split products and D-dimer (14.36 µg/dL, normal: <0.53 µg/dL) but normal fibrinogen level (322 mg/dL, normal: 193–488 mg/dL). Peripheral blood smear revealed marked schistocytosis (figure 1) with normal platelet count. The patient was diagnosed with cancer-associated microangiopathic haemolytic anaemia1 2 with laboratory evidence of disseminated intravascular coagulation, and she passed away on comfort measures 24 hours after admission.

Figure 1

Arrows showing marked schistocytes.

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