A new methodologic approach for clinico-pathologic correlations in invasive placenta previa accreta

Area of Science:

• Perinatal pathology
• Obstetrics
• Gynecologic pathology

Background:

• Accurate epidemiology data for placenta accreta spectrum (PAS) management is limited by diagnostic variability.
• Clinical and histopathologic data for PAS diagnosis at birth show high variability.

Purpose of the Study:

• To evaluate a novel method for correlating clinical and pathological data in placenta accreta spectrum.
• To improve diagnostic accuracy for women with prior cesarean delivery and suspected placenta accreta.

Main Methods:

• A prospective cohort study of 24 patients with placenta previa accreta used a modified pathologic technique.
• This technique involved intraoperative, immediate postoperative examination, and guided histologic sampling of hysterectomy specimens.
• Compared with a control group (24 patients) using standard pathologic examination.

Main Results:

• The study group had significantly shorter histopathology reporting times (7 vs. 15 days) and fewer histologic samples (4 vs. 14).
• Higher numbers of slides showed villous invasion (2 vs. 1), with a lower ratio of samples to positive slides (2 vs. 9).
• Intraoperative examination identified serosal vascularity crucial for differential diagnosis, which was not visible postoperatively.

Conclusions:

• The modified method provides valuable clinical information on serosal vascularity and accreta extension.
• This cost-effective approach enhances histologic sampling quality, improving epidemiologic data accuracy.
• Perinatal pathologists should be integral to multidisciplinary PAS management teams.