Papilectomía endoscópica de lesión ampular benigna: Reporte de un caso y revisión de la literatura

Introduction: The lesions of the ampulla of Vater represents around 0,5 % of gastrointestinal neoplasms. Case report: Symptoms are not specific, so its diagnostic is incidental. The biopsy of the ampulla of Vater has a false - negative of 60 % for adenocarcinoma, for that reason all adenomas ones the diagnosticated must be resected, because of the high risk of malignancy; having a survival of 67 % at five years. Conclusion: We report the case of a patient with an adenoma in the ampulla of Vater who underwent endoscopic papilectomy.Introducción: Las lesiones de la ampolla de Vater representan alrededor del 0,5 % de las neoplasias gastrointestinales. Reporte del caso: el cuadro clínico es inespecífico por lo que su diagnóstico es incidental. La biopsia de la ampolla de Vater tiene un falso - negativo del 60 % para adenocarcinoma, por lo que todos los adenomas diagnosticados deben ser resecados, por el alto riesgo de malignización; teniendo una supervivencia del 67 % a los cinco años. Conclusión: se reporta el caso de una paciente con adenoma de la ampolla de Vater a quien se realizó papilectomía endoscópica

Characterisation of microbial attack on archaeological bone

As part of an EU funded project to investigate the factors influencing bone preservation in the archaeological record, more than 250 bones from 41 archaeological sites in five countries spanning four climatic regions were studied for diagenetic alteration. Sites were selected to cover a range of environmental conditions and archaeological contexts. Microscopic and physical (mercury intrusion porosimetry) analyses of these bones revealed that the majority (68%) had suffered microbial attack. Furthermore, significant differences were found between animal and human bone in both the state of preservation and the type of microbial attack present. These differences in preservation might result from differences in early taphonomy of the bones. © 2003 Elsevier Science Ltd. All rights reserved