Placenta accreta spectrum (PAS) is classified by the depth of invasion. In which type does the placenta invade through the full thickness of the myometrium and into the serosa, but NOT the adjacent pelvic organs?

• A Placenta percreta ✓
• B Placenta accreta
• C Placenta increta
• D Placenta praevia with accreta

Explanation

In placenta percreta, the chorionic villi penetrate through the full myometrial thickness and serosa. When the placenta additionally invades adjacent organs (bladder, bowel), that is still classified as percreta but with organ involvement. Placenta accreta involves villi attached to the myometrium without invasion; increta involves partial myometrial invasion not reaching the serosa.

Reference: Williams Obstetrics, 26th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.