Pseudoachalasia Following Nissen Fundoplication.

Pseudoachalasia, clinically indistinct from achalasia in symptoms and high-resolution manometry findings, differs by a secondary etiology with more than half of the occurrences arising from malignancy. Rarely pseudoachalasia presents after surgeries of the esophagus and gastroesophageal junction. This case offers an additional example of pseudoachalasia after Nissen fundoplication; however, it is unique to the literature by documenting complete manometric progression from normal to pseudoachalasia in a single patient. This case serves to highlight the importance of thorough workups in patients with achalasia symptoms and broadens understanding of this disease process by offering manometric findings in an evolutionary phase.