Most commonly foreign body lodges in which pa of esophagus: (A) At the level of cricopharyngeus, (B) Where it crosses the aoic arch, (C) Where it is crossed by left bronchus, (D) Where it pierces the diaphragm
Answer is A. There are physiological constrictions in esophagus at 4 levels as mentioned below, foreign body M/C lodges at first constriction. Constriction of oesophagus Veebral Level Distance From Upper Incisors Cricopharyngeal C6 6" Arch of aoa T4 9" Crossing of left bronchus T6 11" Esophageal opening in diaphragm T10 15"