Brief Answer:
Barrett's esophagus possibly

Detailed Answer:
Hello and thanks for choosing 'Ask a Doctor' service for your query,
I've read your details,

The condition your doctor is referring to is called Barrett's esophagus.

In Barrett's esophagus, tissue in the esophagus is replaced by tissue similar to the intestinal lining.
Barrett's esophagus is often common in people who have long-term gastroesophageal reflux disease (GERD). This change occurs over many years and is the esophageal response to chronic exposure to harmful chemicals from the stomach, most notably reflux of acid and bile.

It's advisable to wait for reports of the biopsy taken by your doctor during the endoscopy (do enquire him/her about it as well).

Hope this was helpful.
Follow-ups are most welcome.

Thanks

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Brief Answer:
Follow up

Detailed Answer:
Hello again,

Generally, it takes 2-5 years to develop.

If symptoms of GERD are neglected and patients are not treated properly then it can happen. Age has nothing to do with this condition.

If proton pump inhibitor is taken along with prokinetic drugs and antacid with proper lifestyle changes then this could be stopped from progressing.

Thank you.

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