Explain abnormal cells in your esoficous where it enters your stomach?

Esophagus? I assume you are referring to abnormal cells to the esophagus. Although vague, abnormal cells could refer to inflammed cells (due to acid irritation), pre-cancerous cells (barrett's esophagitis) or even cancer cells from esophageal cancer. These are often caused by chronic acid irritation due to acid reflux.