The star died on January 30 at a Los Angeles hospital, with a blood clot in her lungs identified as the immediate cause.

Catherine O'Hara died from a pulmonary embolism, according to the actress's death certificate, which was obtained by USA ...

Catherine O’Hara’s death from a pulmonary embolism has drawn attention to this serious condition in which a blood clot lodges in the lungs. Dr. Leana Wen explains.

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A pulmonary embolism is a serious and potentially fatal medical emergency that occurs when a blood clot blocks an artery in the lungs.

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Here's all you need to know about Catherine O'Hara's cause of death at 71, pulmonary embolism from rectal cancer, courtesy of ...

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Although her cause of death has not yet been confirmed, O’Hara has previously shared that she was born with a rare genetic condition, in which her heart sits on the opposite side of her chest.