Question

the most common type of malignancy of the esophagus in the u.s. most often associated with gerd is which of the following?
m u c o e p i d e r m o i d c a r c i n o m a
l y m p h o m a
s q u a m o u s c e l l c a r c i n o m a
l e i o m y o s a r c o m a
a d e n o c a r c i n o m a

Explanation:

Gastroesophageal reflux disease (GERD) is associated with Barrett's esophagus, which is a risk factor for adenocarcinoma of the esophagus. Squamous cell carcinoma was more common historically but adenocarcinoma has become more prevalent in the U.S. due to factors like GERD. Mucoepidermoid carcinoma, lymphoma, and leiomyosarcoma are much rarer esophageal malignancies.

Answer:

Adenocarcinoma