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 A 30 year old male is having Attic cholesteatoma of left ear with lateral sinus thrombophlebitis. Which of the following will be the operation of choice? and explain in detail?
(CWD) Canal wall down is usually done is cases of Attic cholesteotoma with complications. The indications for a canal wall down procedure would be a large cholesteatonma involving the mastoid cavity, or a patient with chronic otitis media who has already failed a canal wall up procedure. There is a category of canal wall down procedures based on intracranial complications of chronic ottitis media, due to cholesteamoma, For etample brain abscess or meningitis from ear disease or even a sigmoid sinus thrombosis from ear disease these would merit a canal wall down procedure