Deep placentation

Robert Pijnenborg, Ivo Brosens, Jan J. Brosens, Roberto Romero
In: Placental Bed Disorders · 2010 · pp. 75–108 · doi:10.1017/cbo9780511750847.010 · W1556083524
book-chapter OA: closed CC0
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⚙ AI-generated summary by claude@2026-06+body, 2026-06-07 ⓘ

This chapter examines the deeper uterine anatomy, particularly the junctional zone's role in controlling uterine movements and its responsiveness to sex steroids.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-07 ⓘ

This chapter examines uterine deep anatomy with a focus on the junctional zone (JZ), describing it as a distinct, highly vascular compartment of myometrium that helps control uterine movements and is responsive to sex steroid levels. It reviews how the JZ undergoes cyclical changes that parallel endometrial thickness, the use of rapidly advancing imaging technologies to classify junctional zone contractions (JZC), and the fact that most existing data come from ultrasound in long-protocol IVF cycles. The chapter reports that excessive JZC are associated with reduced implantation rates in both spontaneous and stimulated cycles. It does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

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last seen: 2026-06-10T17:14:06.276822+00:00
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