Achalasia Secondary to Submucosal Invasion by Poorly Differentiated Adenocarcinoma of the Cardia,  Siewert II: Consideration on Preoperative Workup

<table>Barium swallow showing emptying defect with “bird beak” sign and narrowing at esophageal junction.</table>

Case Reports in Surgery

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Figure 2

Figure 2: Achalasia Secondary to Submucosal Invasion by Poorly Differentiated Adenocarcinoma of the Cardia,  Siewert II: Consideration on Preoperative Workup 

Figure 2 | Achalasia Secondary to Submucosal Invasion by Poorly Differentiated Adenocarcinoma of the Cardia,  Siewert II: Consideration on Preoperative Workup 