{
    "abstract": "To evaluate the occurrence of retained products of conception (RPOC) after termination of pregnancy in the first trimester and to assess the vascular signals with transvaginal ultrasonography (TVUS) examination in the detection of retained products.\nA retrospective cohort study was performed using TVUS examination in patients following termination of pregnancy. In cases of RPOC, 3 scales of vascular signal were identified: type 1, no or small amount, spot flow signals; type 2, medium amount, strip-like flow signals; type 3, rich amount, circumferential-like flow signals. The correlation between vascular signals and placenta accreta spectrum (PAS) staging was proposed by sonography and histopathology findings.\nThe 3 vascular patterns were differently distributed within non-RPOC as well as RPOC patients with and without PAS: type 1 vascular signal detection rates of non-RPOC and RPOC were 97.8% (262/268) and 28.1% (18/64), respectively. Of 64 cases of RPOC, 48.4% (31/64) of the patients had type 2 vascular signals. Vascular signals were enhanced in RPOC with PAS patients whose diagnosis was confirmed by histopathology.\nThe vascularity (amount of flow), vascular pattern (spot, strip- or circumferential-like flow), and the flow penetrating myometrium were significant findings for distinguishing concomitant RPOC with and without PAS. Additionally, RPOC may contribute to PAS progression, or PAS and RPOC in coordination strengthen the observed vascular signals.",
    "authors": [
        {
            "affiliation": "Department of Ultrasound, Jinan University First Affiliated Hospital, Guangzhou, China.",
            "firstname": "Fangfang",
            "initials": "F",
            "lastname": "Lin"
        },
        {
            "affiliation": "Department of Pathology, Jinan University School of Medicine, Guangzhou, China; Department of Gynecology and Obstetrics, Jinan University First Affiliated Hospital, Guangzhou, China.",
            "firstname": "Zongbing",
            "initials": "Z",
            "lastname": "Chen"
        },
        {
            "affiliation": "Department of Gynecology and Obstetrics, Jinan University First Affiliated Hospital, Guangzhou, China.",
            "firstname": "Huan",
            "initials": "H",
            "lastname": "Tao"
        },
        {
            "affiliation": "Department of Pathology, Jinan University School of Medicine, Guangzhou, China.",
            "firstname": "Xinyi",
            "initials": "X",
            "lastname": "Ren"
        },
        {
            "affiliation": "Department of Ultrasound, Jinan University First Affiliated Hospital, Guangzhou, China.",
            "firstname": "Peiyan",
            "initials": "P",
            "lastname": "Ma"
        },
        {
            "affiliation": "Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.",
            "firstname": "Gendie E",
            "initials": "GE",
            "lastname": "Lash"
        },
        {
            "affiliation": "Department of Gynecology and Obstetrics, Jinan University First Affiliated Hospital, Guangzhou, China. Electronic address: piaoshuai2003@126.com.",
            "firstname": "Hanlin",
            "initials": "H",
            "lastname": "Shuai"
        },
        {
            "affiliation": "Department of Pathology, Jinan University School of Medicine, Guangzhou, China. Electronic address: pinger355@126.com.",
            "firstname": "Ping",
            "initials": "P",
            "lastname": "Li"
        }
    ],
    "conclusions": null,
    "copyrights": "Copyright \u00a9 2023 The Society of Obstetricians and Gynaecologists of Canada/La Soci\u00e9t\u00e9 des obst\u00e9triciens et gyn\u00e9cologues du Canada. All rights reserved.",
    "doi": "10.1016/j.jogc.2023.102266",
    "journal": "Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC",
    "keywords": [
        "first trimester",
        "placenta accreta spectrum disorders",
        "retained product of conception",
        "sonography",
        "vascularization"
    ],
    "methods": null,
    "publication_date": "2023-11-09",
    "pubmed_id": "37940040",
    "results": "The 3 vascular patterns were differently distributed within non-RPOC as well as RPOC patients with and without PAS: type 1 vascular signal detection rates of non-RPOC and RPOC were 97.8% (262/268) and 28.1% (18/64), respectively. Of 64 cases of RPOC, 48.4% (31/64) of the patients had type 2 vascular signals. Vascular signals were enhanced in RPOC with PAS patients whose diagnosis was confirmed by histopathology.",
    "title": "Sonographic Findings of Vascular Signals for Retained Products of Conception in Women Following First-Trimester Termination of Pregnancy.",
    "xml": "<Element 'PubmedArticle' at 0x788505f39030>"
}