[Evaluation of the association of a serum marker and second trimester ultrasonography for the screening of trisomy 21 in women of less than 38 years. Prospective study of 5,163 patients]. / Evaluation de l'association marqueur sérique et échographie du deuxième trimestre pour le dépistage de la trisomie 21 chez les femmes de moins de 38 ans. Etude prospective chez 5,163 patientes.

OBJECTIVES: Use of serum markers alone for trisomy 21 screening programs leads to a high rate of amniocentesis. Adding a second parameter (ultrasonography during the second trimester) might reduce this rate yet retain satisfactory sensitivity. This work was conducted to evaluate the pertinence of associating serum hCG level between 16 and 17 weeks gestation and morphological ultrasonography between 18 ans 20 weeks gestation. METHOD: A prospective study was conducted in 5,163 pregnant women aged over 38 years. A morphological ultrasonography was performed in all patients whose hCG level > 1/150 indicated a risk. An amniocentesis was proposed if an anomaly was detected at ultrasonography. RESULTS: Serum hCG was above the risk threshold retained in 11.9% of the patients and among these patients at least one anomaly was detected at ultrasonography in 12%. An amniocentesis was performed in 1.4% of all patients. The positive predictive value of the screening test was 20%. CONCLUSION: Combining a serum marker and ultrasonography during the second trimester allows a reduction in the rate of amniocentesis compared with screening with serum markers alone. Sensitivity for detecting trisomy 21 remains satisfactory.

[Krukenberg tumor during pregnancy with maternal and fetal virilization: a difficult diagnosis. A case report]. / Tumeur de Krukenberg associée à la grossesse avec virilisation maternelle et foetale: un diagnostic difficile. A propos d'un cas.

We present a case of maternal and fetal virilization caused by an androgen-secreting ovarian tumor. Biopsy at caesarean section was required to determine the etiology (Krukenberg tumor) and orient diagnosis to a primary cancer (gastric adenocarcinoma).

[In vitro fertilization. Analysis of results after the first 2 years' activity]. / Fécondation in vitro. Analyse des résultats sur les deux premières années d'activité.

413 menstrual cycles were monitored in the first two years of the work of the In-Vitro Fertilization Unit in La Pitié-Salpêtrière. On-going pregnancies were achieved from the very first months of activity, with a level which stayed relatively constant in the first year. Technical changes were introduced and in particular a higher recovery rate of oocytes when ultrasound was used and above all when LH-RH analogues were used in the process of stimulation. It is this last point that seems to be the most interesting. In fact, when the results are examined there is a definite rise in the number of on-going pregnancies of which the level went up by 2.3 times as compared with using a classical protocol of Clomithene citrate and HMG. In the 153 cycles when D-Trp6 LH-RH was used, the percentage of on-going pregnancies was 13.7% for each cycle and 20% for embryo implants. Furthermore, it became possible to work out the dates for the patients and this appears to us essential as the numbers of couples attending increase.