Kim Kardashian revealed a scary medical issue she went through … explaining she had “irregularities” surgically removed from her throat … and it’s the same symptom her late dad Robert Kardashian experienced.

Kim documented it all for “The Kardashians” … she mentioned that she had been feeling a “little off lately” and that her throat was “killing me” … so she sought medical treatment from a doctor.

The physician — who advised her to take medication and undergo a procedure to learn more — told her … “I think you have a little bit of inflammation of the esophagus, and I think you have esophagitis.”

Noting that her own father died from esophageal cancer in 2003 … Kim admitted her diagnosis “really hits home for me.”

In a preview for next week’s episode … Kim can be seen going under the knife, as she narrates … “Doctors said my esophagus has these irregularities, that I have to have them cut out. That’s the same thing my dad had.”