Placenta increta
Last revised by Jeremy Jones ◉ on 20 Sep 2021
Citation, DOI & article data
Citation:
Weerakkody Y, Jones J, Hacking C, et al. Placenta increta. Reference article, Radiopaedia.org (Accessed on 06 Feb 2023) https://doi.org/10.53347/rID-13497
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rID:
13497
Article created:
17 Apr 2011 by Yuranga Weerakkody ◉
Revisions:
17 times by 11 users - see full revision history
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Placenta increta is an intermediate level in the spectrum of abnormal placental villous implantation and accounts for ~20% of such cases. The placental villi extend beyond the confines of the endometrium and invade the myometrium.
The ends of the spectrum of abnormal placental villi adherence are:
On this page:
Epidemiology
The estimated incidence is increasing (likely related to the increased practice of cesarean sections), probably ~1 in 50,000 pregnancies.
Risk factors
- prior cesarean section
- placenta previa
- advanced maternal age
- uterine anomalies
- intrauterine adhesion bands
- previous surgery
Pathology
In placenta increta, chorionic villi invade well into the myometrium but not through the entire wall.
Radiographic features
Ultrasound
As with the less severe placenta accreta, there can be focal obliteration of the retroplacental hypoechoic zone 4.
References
- 1. Avva R, Shah HR, Angtuaco TL. US case of the day. Placenta increta. Radiographics. 19 (4): 1089-92. Radiographics (full text) - Pubmed citation
- 2. Panoskaltsis TA, Ascarelli A, De souza N et-al. Placenta increta: evaluation of radiological investigations and therapeutic options of conservative management. BJOG. 2000;107 (6): 802-6. BJOG (link) - Pubmed citation
- 3. Tabsh KM, Brinkman CR, King W. Ultrasound diagnosis of placenta increta. J Clin Ultrasound. 10 (6): 288-90. - Pubmed citation
- 4. Pasto ME, Kurtz AB, Rifkin MD et-al. Ultrasonographic findings in placenta increta. J Ultrasound Med. 1983;2 (4): 155-9. J Ultrasound Med (abstract) - Pubmed citation
- 5. Semelka RC. Abdominal-Pelvic MRI. Wiley-Blackwell. (2010) ISBN:0470487755. Read it at Google Books - Find it at Amazon
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