Objective. To evaluate trophoblastic cell proliferation and angiogenesis in tubal pregnancy assessed by immunohistochemical study and their correlation with an average variation of β -hCG in an interval of 48 hours before surgery. Methods. A prospective study was conducted on 18 patients with a diagnosis of tubal pregnancy. The patients were divided into two groups of ectopic pregnancy of which...

We describe a case of choriocarcinoma with multiple organ metastases after term delivery. A 43-year-old female was diagnosed as choriocarcinoma with metastases to the liver, lungs, marrow cavity, thoracic vertebra and brain, based on serum levels of β-human chorionic gonadotrophin (β-hCG), clinical symptoms, gynecological examination, PET/CT examination and medical histories. Fourteen courses o...

OBJECTIVE To identify whether cutoff for sensitivity advertised by three pregnancy tests in urine are compatible to those reported by the manufacturer and to describe their diagnostic performance. METHODS The urine of a male volunteer was used to dilute recombinant β-hCG at defined concentrations of 0, 6.25, 12.5, 25, 50, and 100 mIU/mL. The tubes containing each of the concentrations were co...

OBJECTIVE To establish an algorithm for first-trimester combined screening for trisomy 21 with biochemical testing from 7 to 14 weeks' gestation and ultrasound testing at 11-13 weeks. METHODS This was a multicenter study of 886 pregnancies with trisomy 21 and 222 475 unaffected pregnancies with measurements of free β-human chorionic gonadotropin (β-hCG) and pregnancy-associated plasma protein...

in circumstances such as in vitro fertilization (ivf) or in patients with luteal phase defect, one needs to ensure the establishment of pregnancy as soon as possible. at the same time, a question arises: how can a physician make sure that the β-hcg is of an endogenous source and not the residue of the prescribed drugs (hcg)? in this article we have studied the elimination time of 1m injection o...

placenta increta, a rare complication of pregnancy, is associated with significant postpartum hemorrhage often requiring emergency hysterectomy. we report a case of conservative management, with a combination of parenteral methotrexate, serial ultrasound and β-hcg assessment. serum β-hcg levels were undetectable after 8 weeks of therapy. a scan at 6 months showed complete involution of the uter...

The objective is to report the case of a 36 year-old female with a primary mediastinal germ cell tumor mimicking an ectopic pregnancy. The patient under birth control pill presented, at seven weeks of amenorrhea, a β-human chorionic gonadotropin (β-hCG) level of 850 UI and uterine vacuity with left lateral uterine heterogeneous mass but no bleeding and no pain. She received left adnexectomy, ut...

OBJECTIVE To investigate whether maternal serum pregnancy associated plasma protein-A (PAPP-A), total β human chorionic gonadotropin (hCG) levels and nuchal translucency (NT) measurements differ in women with pre-gestational diabetes mellitus (PGDM) compared to non-diabetic controls and to assess whether correction factors are needed for diabetic women in calculation of aneuploidy risks. STUD...