Introduction to Gestational Trophoblastic Disease
Gestational trophoblastic disease (GTD) encompasses a diverse array of proliferative disorders that originate from the trophoblast, the outer layer of the blastocyst responsible for forming key structures such as the chorion and amnion. GTD includes conditions ranging from benign hydatidiform moles to malignant gestational trophoblastic neoplasia (GTN). These disorders can present during or after any gestational event, regardless of whether the pregnancy is intrauterine or ectopic. While ectopic pregnancies and hydatidiform moles are both recognized clinical entities, their combination as an ectopic molar pregnancy (EMP) is notably rare, with only a handful of cases documented in medical literature. Data from the Sheffield Trophoblastic Disease Center indicate an incidence of approximately 1.5 cases per million births in the UK over a 15-year period.
Case Presentation and Clinical Findings
This article details the case of a 36-year-old woman, Gravida 5, Para 4, who visited the gynecological emergency unit after experiencing diffuse abdominal pain and vaginal bleeding alongside a month of amenorrhea. Her prior medical history was unremarkable, and she had been using oral contraceptives for over three years with regular menstrual cycles. Upon examination, she was alert and stable, displaying notable tenderness in the abdominal and pelvic regions. An ultrasound revealed a significant hemoperitoneum, an empty uterus, and a mass in the left adnexa, which raised suspicion for an ectopic pregnancy. Laboratory tests indicated an elevated serum beta-human chorionic gonadotropin (_β_-hCG) level of 26,085 IU/L, further complicating the diagnosis.
Emergency exploratory laparotomy confirmed massive hemoperitoneum and a ruptured left fallopian tube, with trophoblastic tissue observed at the rupture site. The patient underwent a left salpingectomy due to extensive damage, and pathological examination of the tissue revealed features consistent with a partial hydatidiform mole within a ruptured tubal pregnancy. The postoperative course was stable, and follow-up serum _β_-hCG levels showed a rapid decline, achieving complete clearance within four weeks, confirming remission.
In summary, ectopic molar pregnancies are exceedingly rare and often underdiagnosed due to their clinical similarities with conventional ectopic pregnancies. This case underscores the importance of systematic histopathological examination of salpingectomy specimens to ensure accurate diagnosis. Continued monitoring of serum _β_-hCG levels post-surgery is critical for detecting any potential progression to malignant conditions. The findings reinforce the necessity for thorough diagnostic protocols and vigilant follow-up to mitigate risks associated with gestational trophoblastic diseases.
As reported by scirp.org.
