Achalasia is a rare motility disorder of the esophagus and present by failure of lower esophageal sphincter (LES) relaxation during swallow. This rare disease of esophagus with it symptoms can mimic a variety of common illnesses of esophagouse,but not the mediastinum
Yolk Sac Tumor as a rare cause of esophageal stricture in a 5-year-old girl: a case report and review of literature
Yolk Sac Tumor (YST), which most frequently arises in the gonads as a type of germ cell tumor, is rare in children but is highly malignant. There are a number of diagnostic tools applied for YST, such as US, CT, Magnetic Resonance Imaging (MRI) and histopathological analysis.