Extensive tertiary contractions in infraaortic esophagus .
Diverticulum in epiphrenic segment posteriorly. (pulsion diverticulum due to motor dysfunction)

Presbyesophagus refers to abnormality of motor function in older individuals.

With increasing age, there is an increasing proportion of abnormal responses to swallowing, characterised by non propulsive contractions.

Abnormal relaxation of lower esophageal spincter may occur.