Placenta accreta spectrum is classified into three types. Which histological finding distinguishes placenta increta from placenta accreta?
- A Chorionic villi invading into the myometrium ✓
- B Absence of decidua basalis with villi attached to myometrium
- C Villi penetrating through the full thickness of the myometrium
- D Villi attached to the parametrium
Correct answer: A. Chorionic villi invading into the myometrium
Explanation
Placenta accreta (vera) is characterised by absent decidua basalis with villi adherent to the superficial myometrium without invasion. Placenta increta is defined by villi that invade into the myometrium. Placenta percreta involves villi penetrating through the full thickness of the myometrium, sometimes reaching the bladder or adjacent organs. These are key histological distinctions.
Reference: Williams Obstetrics, 26th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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