India, Feb. 10 -- Comedian and actor Catherine O'Hara, who passed away in January, was suffering from rectal cancer, the Los Angeles County Medical Examiner's Office revealed on Monday in her death certificate. The coroner's office said that she suffered a pulmonary embolism, which was caused by underlying rectal cancer.

The death certificate contradicts the claim made by O'Hara's representatives that the 'Schitt's Creek' actor died after a "brief illness." O'Hara was 71 at the time of her death.

With details of her death emerging, it has been revealed that O'Hara was privately suffering from rectal cancer. It has left many fans wondering when the Home Alone star was diagnosed with rectal cancer. In this article, we'll look at what was ...