This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Esophageal disorders, Subject name: Pathology
All of the following statement are true regarding esophageal atresia, except: 
Select and explain. 
A. There is absence of esophagus, B. It is a mechanical obstruction, C. It occurs most commonly at or near the tracheal bifurcation, D. It is associated with other congenital anomalies
A: There is absence of esophagus
Answer: A: There is absence of esophagus 
Explanation: Esophageal atresia Congenital defect Thin, non-canalized cord replaces a segment of esophagus, causing a mechanical obstruction. Thus, some pa of esophagus is present in esophageal atresia - option-1 is wrong. Commonly at/near tracheal bifurcation usually associated with fistula connecting upper/lower esophageal pouches to bronchus or trachea. Abnormalities of the esophagus are associated with congenital hea defects, genitourinary malformations, and neurologic disease.