This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: ENT
A 70 year old patient presented with history of fever, repeated aspiration and coughing in the night. On examination there is a swelling on left side of neck which produces gurgling sound on compression. Following is the barium swallow study of the patient. What is the most likely diagnosis? 
Select and explain. 
A. Zenkers diveiculum, B. Laryngocoele, C. Plummer vinson syndrome, D. Dysphagia Lusoria
A: Zenkers diveiculum
Answer: A: Zenkers diveiculum 
Explanation: Zenker's Diveiculum -patient present with intermittent dysphagia, regurgitation of food and foul smelling breath later on progressive dysphagia progressive. Laryngocele is an air-filled cystic swelling due to dilatation of saccule it is a diveiculum of mucous membrane which stas from the anterior pa of ventricular cavity and extends upward between vestibular folds and lamina of thyroid cailage ,abnormally enlarges to forms the air containing sac - Laryngocele.