Conversation so far:
What year did Lilyan Tashman die?
Lilyan Tashman died on 1934
Where did Lilyan Tashman die?
Lilyan Tashman died at the Doctor's Hospital in New York City
Was Lilyan Tashman buried at Doctor's Hospital?
No, Lilyan Tashman was buried at Brooklyn's Washington Cemetery
How did Lilyan Tashman die?
Lilyan Tashman died of cancer
What kind of cancer did Lilyan Tashman have?
Lilyan Tashman died of abdominal cancer

Question: When was she diagnosed?
Self-contained rewrite: When was Lilyan Tashman diagnosed with abdominal cancer?