（left neck）Infiltrating and metastatic poorly differentiated mucinous adenocarcinoma was found in the fibrous tissue.Combined with immunohistochemical staining, it was suggested that it originated from the lung.
CK7(+),CK18(+),TTF-1(+), SP-B(+), NapsinA(+), Ki-67(+,about 20%), P63(+),CK5/6(-),P40(-)，Syn(-),CgA(-),CD56(-),Vimentin(-), CDX2(-)
The mass of left neck was excised, and a piece of gray yellow gray white tissue was found. The volume is 3 * 2 * 1.5cm. The section is gray white and medium in quality.
Gender：F
Age：44
family history ：Parents are alive
Serological examination ：Serum CEA was slightly increased
surgical mode ：Left neck mass excision
Tumor size：3 * 2 * 1.5cm
Disease status(primary/relapse)：primary
G：III
TNM：-
Stage：IV
Gene：ROS1
Mutant Site：PCR
Mutation Type：fusion
% tumor ：*
% necrosis：*
