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 following complication would result if the postero superior retraction pocket in the eardrum is allowed to progress? and explain in detail?
Postero superior retraction pocket of the ear drum, if allowed to progress leads to complications such as sensorineural hearing loss, facial nerve involvement and a labrynthine fistula formation. Other extracranial complications which can occur includes labrynthitis, mastoiditis, petrositis and soft tissue abscess.