[Pseudomyxoma peritonei associated with appendiceal mucinous cystadenoma. Report of a case and review of the literature]. / Pseudomixoma peritoneal asociado a cistadenoma mucinoso del apéndice. Reporte de un caso y revisión de la literatura.

Mucinous cystadenoma of the appendix is a rare entity. Its incidence is low, between 0.1 and 0.3%. Constitutes are found incidentally al surgery and is generally asymptomatic. We present a case of a 60 years old woman which was complicated by a pseudomyxoma peritonei, idiopathic ulcerative rectocolitis and infiltration of the muscular layer of the colon sigmoid wall with poorly differentiated adenocarcinoma. We reviewed the literature, emphasize modern concepts about its terminology and its possible pathogenesis.

[Meningitis caused by Bacteroides fragilis in children]. / Meningitis por Bacteroides fragilis en niños.

Bacteroides fragilis is an obligated anaerobic bacillus which forms part of the normal intestinal flora of the colon and is often seen as a common pathogen in intraabdominal infections. It is an infrequent pathogen in cases of meningitis; a review of the literature reports only eight cases of this disease in children, especially in neonates with conditioning factors such as abdominal sepsis, chronic middle ear otitis and atrial-ventricular derivations. A case of a newborn baby girl with lumbosacral myelomeningocele is reported. After the defect was surgically corrected, the wound became infected, the stitches opened, the child began to have fever, became irritable and suffered convulsions. The spinal tap showed changes compatible to bacterial meningitis, the bacteria was grown on Shaedler medium. The child was treated with cefotaxime and amikacin showing no satisfactory improvement. Afterwards, a second spinal tap showed Bacteroides fragilis.

Valores de osmolalidad serica en los recien nacidos normales a termino y pre-termino. / The values of the serum osmolarity in the normal term and preterm newborn infants

Se estudiaron 100 recien nacidos normales con sus respectivas madres sanas, cuyos nacimientos ocurrio en el Hospital Universitario de Los Andes, de la ciudad de Merida, durante un periodo de tres meses, y de los cuales fueron divididos en grupos de termino (n=80), y de pre-termino (n= 20). A las madres de estos recien nacidos, se les determino la osmolalidad serica medida por el descenso del punto crioscopico, durante el periodo expulsivo, y a los recien nacidos, se les determino la misma osmolalidad serica y los niveles de urea, glicemia y sodio serico, para obtener ademas-la osmolalidad serica calculada. El promedio de osmolalidad serica medida, para los 100 recien nacidos fue de 283 mOsm./Kg., no encontrandose diferencia estadisticamente significativa entre ambos grupos de neonatos. Ademas, se encontro buena correlacion entre la osmolalidad serica medida de los recien nacidos y los valores de osmolalidad serica de las madres. Existiendo una diferencia de 7 - 10 mOsm./Kg., entre la osmolalidad serica medida y la calculada. Otro de los hallazgos encontrados, es la correlacion existente entre la osmolalidad serica de los recien nacidos y sus niveles de sodio serico