You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the tumours are unique to pregnancy and explain in detail?
*Physiological proliferation of luteal cells in response to gonadotrophins in pregnancy - Theca lutein hyperplasia of pregnancy*Pathological proliferation of luteal cells in response to gonadotrophins in pregnancy- Luteoma . Luteoma is a type of sex cord stromal tumours( Ref: Robbins 8/e p1051)