Precocious puberty produced by an osteolipoma of the tuber cinereum.

Central precocious puberty (CPP) is fairly common in girls. In most girls, the etiology for the CPP is unknown. Among the more rare causes of CPP in girls are central nervous system tumors and hamartomas. Osteolipoma of the tuber cinereum, which is the most commonly diagnosed at autopsy, has been reported as a cause of CPP. We describe an 8-year-old girl with central precocious puberty in whom MRI demonstrated a lesion compatible with osteolipoma. Her symptom was breast development that begun at age 7 years and 9 months. Her case history, laboratory studies and imaging are presented. Her puberty was rapidly progressive. She was treated successfully with a GnRHa (Triptorelin 3.75 mg IM q 4 weeks). Her case brings to the forefront the need to perform an MRI in children with rapidly progressing puberty.

[Utility of the determination of the foetal fibronectina in pregnancies of 40 weeks or more to predict the beginning of labor]. / Utilidad de la determinación de la fibronectina fetal en embarazos de 40 semanas o más para pronosticar el inicio de trabajo de parto.

BACKGROUND: Perinatal morbidity and mortality increase in proportion to the time from waited date of labor to birth. A test helping to predict pregnancies is required, which also helps to predict pregnancies that will progress more than 41 weeks. OBJECTIVE: To determine the usefulness of fetal fibronectin in vaginal secretions to predict pregnancies that will progress 41 weeks or more. MATERIAL AND METHODS: A cohort and descriptive study was done in which 144 women with a pregnancy of 40 weeks or more were included. Fetal fibronectin was detected in cervix-vaginal secretions and time from the sample obtaining to birth was estimated. RESULTS: Seventy patients with positive fibronectin were recorded; 92% had labor in the following seven days from the sample obtaining (interval mean: 3.1 days). The remaining patients (n = 44) resulted with negative fibronectin; only 37.5% had spontaneous labor, but none of them during the first four days from the sample obtaining (mean: 7.9 days). CONCLUSION: Absence of fetal fibronectin in vaginal secretions is a good prognostic marker to identify patients who will achieve a pregnancy of 41 weeks or more (sensitivity of 70% and specificity of 84%; positive and negative predictive value of 75% and 80.7%, respectively, and relative risk of 10, CI 95%, 5.7-14.3). This method is useful to prevent perinatal complications inherent to the pregnancy of 41 weeks or more.