本帖最后由 pathology 于 2014-8-1 15:00 编辑
本周病例(2014.6.30—2014.7.6)
1、你考虑什么诊断?
混合性腺神经内分泌癌(Mixed Adenoneuroendocrine Carcinoma,MANEC)
In the 2000 WHO classification of endocrine tumors, such neoplasms were defined as mixed exocrine-endocrine tumors when each component represents at least 30% of the lesion. It is worth noting that adenocarcinomas with scattered neuroendocrine cells are not categorized as mixed exocrine-endocrine tumors, neither are neuroendocrine neoplasms with a focal glandular component since in most cases less than 30% of each component is present. Mixed exocrine-endocrine tumors are rare and are believed to account for less than 3% of colorectal neoplasms.
2、需要做什么鉴别诊断?
低分化腺癌、腺癌伴神经内分泌分化、上皮样GIST等
3、本病预后如何?
胃肠道腺癌伴有局灶神经内分泌分化的临床意义尚存在争议。MANEC是一组异质性病例,其预后一般取决于普通型腺癌和神经内分泌肿瘤成分各自的分级,其中更具侵袭性的成分与预后关系更为密切。由高分化神经内分泌肿瘤和腺癌构成的病例应做为腺癌处理,而存在低分化神经内分泌肿瘤成分时应做为神经内分泌癌处理。
Ref:
http://path.upmc.edu/cases/case828.html
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