Objective To study the outcome of pregnancy in renal transplant patients in Spain. Design A retrospective review based on two consecutive national inquiries. Setting Departments of Obstetrics and Gynaecology and Renal Transplant Units in Spain. Subjects Pregnant women who had renal transplants between 1965 and 1989. Main outcome measures From the preliminary inquiry the frequencies of miscarriage, therapeutic abortion, preterm birth, fetal malformation, twins, stillbirths, neonatal deaths and loss of maternal renal function were recorded. The subsequent, more detailed inquiry provided additional information including donor type, previous rejection episodes and interval between rejection and pregnancy, previous creatinine level, previous hypertension and development of hypertension in pregnancy, developments during labour and delivery and the occurrence of intra uterine growth retardation and low birth weight. Results The preliminary inquiry yielded information about 133 pregnancies. The miscarriage rate was 10% and the therapeutic abortion rate was 16%. Of the 99 pregnancies that continued, 46% ended before term and 53% progressed to term. The perinatal mortality rate was 107.8 per 1000 and 4% of the infants had minor congenital malformations. The second inquiry yielded more detailed data about 66 pregnancies. There were no therapeutic abortions and 12% of the pregnancies ended in miscarriage. Among the 58 pregnancies that reached 28 weeks gestation, preterm birth occurred in 28 (48%) and intra uterine growth retardation occurred in 17 (29%). Among 48 women with normal renal function before pregnancy, the perinatal mortality rate was 68 per 1000, the miscarriage rate was 8% and in 10 of these women (21%) renal function was impaired after pregnancy. In constrast, among 18 women with impaired renal function before pregnancy, the perinatal mortality rate was 142 per 1000, the miscarriage rate was 22% and in six of these women (33%) renal function deteriorated after the pregnancy. Impairment of renal function was most common in women with hypertension during pregnancy or with rejection episodes during the year before conception. Conclusions Women with a renal transplant can have a successfull pregnancy, but there are definite risks for both mother and fetus. Pregnancy should be discussed with the woman and encouraged only if there is good renal graft function.

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This study evaluated male gonadal function in long-term survivors of childhood cancer and assessed the suitability of offering sperm analysis to all those patients independently of the diagnosis and treatment received. A total of 43 survivors of acute lymphoblastic leukemia (21), acute myeloid leukemia (1), neuroblastoma (8), ganglioneuroblastoma (1), ganglioneuroma (2), Wilms' tumor (9), and mesoblastic nephroma (1) underwent sperm analysis at a mean age of 20.2 years, after a mean time off treatment of 13.6 years. Eight of the patients (19%) were azoospermic, 2 (5%) were severely oligo-asthenozoospermic, and only 16 (37%) were normozoospermic. A control group of healthy volunteers aged < or = 30 years included no azoospermic subjects, 7% severely oligo-asthenozoospermic, and 67% normozoospermic. Comparisons were also made with patients treated at our Human Reproductive Unit aged < or = 30 years (n = 373) whose percentages for the above parameters were 4, 9, and 42%, respectively. Cumulated cyclophosphamide dose and basal follicle-stimulating hormone (FSH) levels were identified as independent factors associated with azoospermia or severe oligo-asthenozoospermia. Azoospermic and severely oligo-asthenozoospermic survivors had significantly smaller mean testicular volume and higher basal FSH levels than the other survivors, but small testicles (sum of both testicular volume < or = 20 mL) and/or abnormally high basal FSH (> 10 mIU/mL) were present in only half of the azoospermic survivors. Male long-term survivors of childhood cancer constitute a high-risk subpopulation for altered sperm analysis. It seems justified to offer sperm analysis to all long-term survivors.

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