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J Obstet Gynaecol Res. 2005 Dec;31(6):579-82.

Routine histopathologic analysis of product of conception following first-trimester spontaneous miscarriages.

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1
Department of Obstetrics and Gynecology, Ministry of Health Ankara Etlik Maternity and Women's Health Research Teaching Hospital, Ankara, Turkey. yytasci@yahoo.com

Abstract

AIM:

To evaluate the histopathologic findings relating to tissue samples collected at surgical uterine evacuation in first-trimester spontaneous miscarriages.

METHODS:

In this retrospective study, histopathologic diagnosis of the tissue samples obtained via surgical uterine evacuation in patients who were admitted to the Early Pregnancy Clinic in a 12-month period with the diagnosis of incomplete miscarriage (n = 970), missed miscarriage (n = 406) and anembryonic miscarriage (n = 230) in the first trimester was recorded and compared with the presurgery diagnosis.

RESULTS:

Uterine evacuation was performed in cases of incomplete miscarriage (n = 970, 60.4%), missed miscarriage (n = 406, 25.2%) and anembryonic miscarriage (n = 230, 14.3%). Histopathologic examination revealed the product of conception in 1119 patients (69.7%), while partial hydatidiform mole was diagnosed in 33 patients (2.1%). Complete hydatidiform mole was detected in only seven cases (0.43%). Exaggerated placental site and placental site trophoblastic nodule was detected in two cases (0.12%). Decidual tissue without chorionic villi was reported in 272 patients (16.9%), raising the suspicion of presence of other pathology.

CONCLUSIONS:

By routine histopathologic assessment of products of first-trimester spontaneous miscarriages, important pathologies such as molar pregnancy and placental trophoblastic disease can be diagnosed. Histopathological assessment has great value in the identification of an ectopic pregnancy or infection when compared with clinical and laboratory findings.

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