Yes, some small polyps disappear or shrink on their own even if they are left untreated. If the patient presents no symptoms that complicate her normal lifestyle, polyps can be left alone and watched to see if they resolve by themselves. Sometimes, they are treated with medications that make polyps dissolve and disappear eventually.
Read the full article on: What is an endometrial or uterine polyp? – Symptoms and treatment ( 39).

Rebeca Reus
BSc, MSc
Degree in Human Biology (Biochemistry) from the Pompeu Fabra University (UPF). Official Master's Degree in Clinical Analysis Laboratory from the UPF and Master’s Degree about the Theoretical Basis and Laboratory Procedures in Assisted Reproduction from the University of Valencia (UV).