Read the Health Record Excerpt Below: Endometrial Bx: Hyperplasia with Atypia

Read the health record excerpt below: Endometrial Bx: Hyperplasia with atypia.
According to the excerpt, what kind of diagnostic procedure did the patient undergo?

A) A record of a breast exam
B) A test used to detect cancer cells, most commonly in the cervix
C) An imaging procedure using sound waves emitted from a device inserted in the vagina
D) An instrument used to examine the vagina
E) The removal of a sample of the inner layer of the uterine tissue in order to examine it