This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
[{'content': 'Laryngocele arises from herniation through \nSelect and explain. \nA. Thyrohyoid membrane, B. Cricoepiglottic membrane, C. Thyroid membrane, D. Cricovocal membrane', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans:A.)Thyrohyoid Membrane Laryngocele It is an air-filled cystic swelling due to dilatation of the saccule. Laryngoceles can be classified into three types: Internal - A laryngocele is defined as internal if the dilatation of Sacculeof the ventricle lies within the limits of the thyroid cailage. External - If the laryngocele extends beyond the thyroid cailage and protrudes through the thyrohyoid membrane producing a lateral neck mass, it is considered external. Combined - In which both internal and external components are seen.', 'role': 'assistant'}]