[Application value of immunohistochemistry INSM1 combined with periodic acid-Schiff stain double staining in glandular and neuroendocrine amphicrine carcinoma in the digestive tract].

探讨免疫组织化学INSM1联合过碘酸雪夫（PAS）染色双重染色（INSM1+PAS双染）在消化道具有腺和神经内分泌双向分化的癌（AC）中的应用价值。