38 yr female presented with recurrent vomiting.
Ultrasound findings :

• Distal thoracic oesophagus is dilated measuring 3.7 cm in maximum diameter.
• Dilated oesophagus filled with fluid and showing air-fluid level.
• Narrowing noted at the level of OG junction.
• No evidence of wall thickening or mass lesion at OG junction.
• – Features suggestive of Achalasia Cardia