Does anyone know the meaning of these terms in my EGD report?

I had an EGD this week to review the status of my hiatal hernia and my continuing reflux. The doctor took a biopsy of a small polyp that appeared benign. The lab results came back as the following:
Gastric mucosa with xanthomatous changes ( CD68+, pankeratin-)
Does anyone know what these terms mean? I have a follow up appointment soon, but I’m very anxious to understand what these terms mean.