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Patient history: 40 year-old female with irregular menstrual bleeding during the last 6 months. Cutterage showed adenocarsinoma upon histological examination. Admitted to hospital for removal of the uterus.

The image is a low power migrograph of endometrium and adjacent myometrium showing a well differentiated adenocarcinoma.

Question 1: Indicate the border between the two tissue components?

 

Question 2: What kind of pathological change does the endometrium show?