Hidden signs of deadly lung clots: a cardiologist explains under-diagnosed pulmonary embolism

Cardiologists warn that pulmonary embolism, often beginning as a leg DVT, can present with chest pain, breathlessness, a racing heart, or blue-tinged lips/nails and is frequently missed, especially in milder cases. Cancer markedly increases clot risk, which may explain Catherine O’Hara’s death from an embolism, and prolonged immobility (like long flights) also raises risk. Prevention includes staying mobile and wearing compression socks on long journeys; treatment usually involves anticoagulants and, in severe cases, surgery. Early recognition is crucial since large emboli can be fatal within hours, though smaller clots can be dangerous if untreated.