Clinical manifestations of antiphospholipid syndrome (APS) include repeated episodes of arterial and/or venous thrombosis, recurrent fetal wastage, and premature births. Correct diagnosis of APS requires identification of lupus anticoagulant (LA) and anticardiolipin antibodies (aCL). Other antibodies such as anti-b2 glycoprotein-I have also been detected. A 32-year-old man presented with acute left-sided hemiplegia and was admitted with a possible diagnosis of primary APS. A pulmonary embolus-in-transit was captured incidentally by transthoracic echocardiographic study.

Clinical manifestations of antiphospholipid syndrome (APS) include repeated episodes of arterial and/or venous thrombosis, recurrent fetal wastage, and premature births. Correct diagnosis of APS requires identification of lupus anticoagulant (LA) and anticardiolipin antibodies (aCL). Other antibodies such as anti-b2 glycoprotein-I have also been detected. A 32-year-old man presented with acute left-sided hemiplegia and was admitted with a possible diagnosis of primary APS. A pulmonary embolus-in-transit was captured incidentally by transthoracic echocardiographic study.