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 Osiander's sign is positive in? and explain in detail?
The pelvic changes are diverse and appear at different periods during pregnancy. There is increased pulsation, felt through the lateral fornices at 8th week called Osiander's sign. Similar pulsation is also felt in acute pelvic inflammatory disease. Ref: Textbook of Obstetrics D.C.Dutta 6th Ed Page 65.