Brain tissue aspiration neural tube defect.

The study aimed to find out how frequent is brain tissue aspiration and if brain tissue heterotopia could be found in the lung of human neural tube defect cases. Histological sections of each lobe of both lungs of 22 fetuses and newborn with neural tube defect were immunostained for glial fibrillary acidic protein (GFAP). There were 15 (68.2%) females and 7 (31.8%) males. Age ranged from 18 to 40 weeks of gestation (mean = 31.8). Ten (45.5%) were stillborn, the same newborn, and 2 (9.1%) were abortuses. Diagnosis were: craniorachischisis (9 cases, 40.9%), anencephaly (8 cases, 36,4%), ruptured occipital encephalocele and rachischisis (2 cases, 9.1% each), and early amniotic band disruption sequence (1 case, 4.5%). Only one case (4.5%) exhibited GFAP positive cells inside bronchioles and alveoli admixed to epithelial amniotic squames. No heterotopic tissue was observed in the lung interstitium. We concluded that aspiration of brain tissue from the amniotic fluid in neural tube defect cases may happen but it is infrequent and heterotopia was not observed.

Splenopancreatic field abnormality is not unique to trisomy 13.

Splenopancreatic fusion is an uncommon finding, usually only seen as part of the splenopancreatic field abnormality associated with trisomy 13. It may present itself either as ectopic splenic tissue in the cauda pancreatis, as ectopic pancreatic tissue in the spleen or accessory spleen, or as fusion of the cauda pancreatis and splenic hilum. In this study, we report four unrelated congenital anomaly cases presenting trisomy 21, osteocraniostenosis syndrome, isolated congenital heart defect, and oligohydramnios sequence due to prune belly syndrome, in which fusion was observed. This demonstrates that, although it may be more common in trisomy 13, this phenomenon should not be interpreted as pathognomonic to that syndrome.

Brain tissue aspiration neural tube defect

O objetivo do estudo foi identificar qual a freqüência de aspiração de tecido cerebral e a existência de heterotopia nos pulmões de casos humanos de defeito de fechamento do tubo neural através da reação imuno-histoquímica para proteína fibrilar glial ácida (GFAP) em cortes histológicos de todos os lobos de ambos os pulmões de 22 casos de fetos e neonatos com defeito de fechamento do tubo neural. Havia 15 casos femininos (68,2%) e 7 masculinos (31,8%), com idade gestacional variando de 18 a 40 semanas (média= 31,8), sendo natimortos e neomortos 10 (45,5%) cada e 2 (9,1%) abortos. Os diagnósticos foram: Craniorraquisquise (9 casos, 40,9%), anencefalia (8 casos, 36,4%), encefalocele occipital rota e raquisquise (2 casos, 9,1%) e 1 (4,5%)caso de seqüência de disruptura amniótica precoce. Somente 1 caso (4,5%) apresentou células positivas dentro de bronquíolos e alvéolos em meio a células epiteliais amnióticas. Não se observou heterotopia no interstício pulmonar. Concluímos que a aspiração de tecido encefálico do líquido amniótico pode ocorrer em casos de defeito do fechamento do tubo neural, mas são infreqüentes e heterotopia não foi observada.