Introduction
Wullstein operation is an esophagectomy and unilateral proximal resection of the esophagus along the lesser curvature at the level of the transverse process of the first thoracic vertebra, which consists of mobilizing the small intestine from the retroperitoneum, crossing it and covering the duodenal stump in the duodenal anastomosis [1].
**Wullstein-plasty** is a method of reconstruction of the esophagus with atresia due to achalasia, anastomotic defects, and radiation. It is performed from the stomach or small intestine with a fairly long anastomosis and a wide side opening, which allows for free flow of intestinal contents and a hollow lumen. The disadvantage of this method is the possible narrowing of the esophagus by the graft, especially in children. It is used to eliminate the stricture of the esophagus operated on for Meckel's diverticulum.
**Esophageal achalasia** (hiatal hernia) is a chronic progressive neuromuscular disease characterized by the development of stretching of the distal esophagus and impaired passage of food.