Only patients for whom complete information was available were included in this study. Information required included a definitive histological diagnosis of neuroendocrine tumor in which hematoxylin-eosin and PAS were complemented by immunohistochemical reaction with chromogranin A and cytokeratin AE1AE3.
Se incluyeron en este estudio solamente los pacientes que tuvieron información completa, incluyendo un diagnóstico histopatológico definitivo de tumor neuroendocrino: hematoxilina-eosina y PAS y se complementó con reacción de inmunohistoquímica con cromogranina A y citoqueranina AE1AE3.