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pregnancy, the implantation of a fertilized ovum outside the endometrial cavity, occurs in 1.5%-2% of pregnancies. It is one of the major causes (about 6%) of maternal death during the first trimester of pregnancy. The remaining 5% implant in the ovary, peritoneal cavity, within the cervix, and the omental pregnancy is the least common form of abdominal pregnancies. A review of the literature on Medline for the period 1958-2012 reported only 16 cases of omental pregnancy. Here we report a case of primary omental pregnancy in a nulliparous woman. A 24 year-old woman gravid 1, para 0, with lower abdominal pain. Her last menstrual period occurred 8 weeks before the visit. The physical examination revealed abdominal tenderness in the lower quadrants, she was not bleeding. Transvaginal ultrasound showed: a free anechoic/hypoechoic area of 30 x 57 mm in the pouch of Douglas and the endometrium was homogeneus with a thickness of 12 mm and no evidence of gestational sac in the uterine cavity. Laboratory data revealed a normal cell blood count and beta hcg levels of 8047 IU / L. Because of continuing abdominal pain and a diagnosis of ectopic pregnancy a diagnostic laparoscopy was performed, which showed hemoperitoneum. Further inspection of abdominal cavity revealed a bloody lesion that was tenaciously adherent to the omentum, using non traumatic laparoscopic forceps and bipolar scissors we carefully removed a friable mass of about 30 mm from the omental attachments. Histological examination showed the presence of blood clot material mixed with trophoblastic tissue. Ultrasound evaluation and and hCG assessment are important to determine the extrauterine location of the ectopic pregnancy but the early diagnosis of abdominal pregnancy requires also a laparoscopic evaluation and, as our case has highlighted, thorough abdominal exploration especially in the absence of adnexal findings when ectopic pregnancy is highly suspected. Early diagnosis of omental pregnancy is difficult but essential to reduce the high mortality risk for the mother. [ABSTRACT FROM AUTHOR]

Omental pregnancy is an extremely rare type of ectopic pregnancy. We present a case in which a 26-year-old woman was admitted to the emergency room with abdominal pain. She was diagnosed with a ruptured ectopic pregnancy after a positive urinary pregnancy test and transvaginal ultrasound. Laparoscopic surgery showed intact pelvic organs and an ectopic mass on the omentum. The patient was treated successfully with laparoscopic partial omentectomy, and pathologic examination confirmed an omental pregnancy. As evidenced by this case, laparoscopy can be useful to diagnose and treat unusually located ectopic pregnancies. [ABSTRACT FROM AUTHOR]

Omental pregnancy is a very rare form of ectopic pregnancy. A 29-year-old woman presented with severe abdominal pain. History of the patient revealed use of combined oral contraceptive pills. There was no gestational sac in the endometrial cavity and no tubal ring in the adnexa, but free peritoneal fluid was detected at ultrasonography. Laparotomy was done according to pre-operative diagnosis of ruptured tubal pregnancy. Bilateral tubes and ovaries were intact; gestational sac was detected attached to the necrotic lower edge of omentum. Although 16 cases of omental pregnancy (mostly secondary) were reported in the literature, herein we describe a primary omental pregnancy without adnexal involvement. [ABSTRACT FROM AUTHOR]

Discusses the complications of an omental pregnancy in a woman under a progestogen-only pill medication. Diagnosis of ectopic pregnancy with complex ovarian cyst; Laparotomic surgery.