Double trouble in an ectopic pregnancy

Author:

Singh Shalini1,Kamatham Vandana1,Vijayan Sharmila1,Joshi Prashant2

Affiliation:

1. Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, Mangalagiri, Andhra Pradesh, India

2. Department of Pathology, All India Institute of Medical Sciences, Mangalagiri, Andhra Pradesh, India

Abstract

Gestational trophoblastic diseases are histologically different types of tumors originating from the placenta with an incidence of 0.2–5.8/1000 pregnancies. Ectopic pregnancy is the implantation of the fertilized ovum outside the uterine cavity, and a 0.64% incidence is reported. Ectopic cornual pregnancy and molar pregnancy are rare cases, and a combination of these two rare entities occurring simultaneously is even rare and very few cases have been reported in the literature. A cornual pregnancy refers to the implantation and development of a gestational sac in one of the upper and lateral portions of the uterus, whereas an interstitial pregnancy is a gestational sac that implants within the proximal, intramural portion of the fallopian tube that is enveloped by the myometrium. We present one of the rare combinations of molar pregnancy and cornual/interstitial ectopic pregnancy in a 30-year-old G3P1 who presented with a triad of amenorrhea, vaginal bleeding, and abdominal pain. Laparotomy was done in view of an ultrasound which was suggestive of a well-defined complex thick-walled lesion of size 3.2 × 3.3 with a gestational sac and no cardiac activity in the right fallopian tube/adnexa suggesting tubal ectopic pregnancy. Beta-human chorionic gonadotropin (β-hCG) levels were done and noted to be as high as 9998 mIU/mL. Intraoperatively, a cornual ectopic pregnancy was found with no hemoperitoneum which was excised. Histopathology showed chorionic villi with variable size and hydropic change, myxoid stromal changes, and cistern formation with polar trophoblastic proliferation, based on which a diagnosis of molar pregnancy was made. Although ultrasonography and higher than usual serum β-hCG levels are diagnostic of uterine molar pregnancy, they do not yield a proper diagnosis in ectopic molar pregnancy, hence, making it difficult to distinguish between an early ectopic molar pregnancy from a nontrophoblastic tubal pregnancy. The final diagnosis is usually made only after histopathology. A high degree of clinical suspicion of cornual pregnancy followed by histopathological examination of the products of conception is the standard for arriving at an appropriate diagnosis. Serial serum β-hCG level follow-up is recommended to rule out its malignant potential.

Publisher

Medknow

Reference15 articles.

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