Emmy-winning actor Catherine O'Hara died from a blood clot in her lungs as a result of rectal cancer, according to her death certificate.
Her official cause of death was listed as a "pulmonary embolism" due to an underlying cause of cancer, sources confirmed to NBC Los Angeles on Monday.
O'Hara's Los Angeles County death certificate also showed that she was cremated, The Associated Press reported. The oncologist who signed off on the certificate indicated that he had been treating O’Hara since March and last saw her Jan. 27.
O'Hara, the "Home Alone" and "Schitt's Creek" star, died at a Santa Monica, California, hospital on Jan. 30 in what was, at the time, called a brief illness.
O'Hara is best known for playing the kind, devoted mother Kate McCallister, who inexplicably kept forgetting her son, played by Macaulay Culkin, in two "Home Alone" films.
Millennial and Gen Z media viewers are likely to associate O'Hara with her beloved late-career portrayal of the cartoonishly larger-than-life Moira Rose, a onetime actor who struggles to adjust to life as a former rich person on “Schitt’s Creek.”
O'Hara was also a favorite ensemble performer of mockumentary pioneer Christopher Guest, and they teamed up in the cult classics “Waiting for Guffman,” “Best in Show” and “A Mighty Wind.”
Her collaborations with director Tim Burton, as eccentric modern artist Delia Deetz in the "Beetlejuice" films and the voice of Sally in "The Nightmare Before Christmas," also earned her legions of fans.
She was nominated for 10 Emmys and won twice, for best female actor in a comedy series in 2020 for "Creek" and best writing in a variety series in 1982 for "SCTV."
