Esophagus
Q) A patient with achalasia presents with worsening dysphagia and weight loss. Imaging shows a dilated esophagus with a narrowed gastroesophageal junction. What is the next best step?
a) Repeat barium swallow study
b) Endoscopy with biopsy to rule out malignancy
c) Start pneumatic dilation
d) Initiate botulinum toxin injection