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![Immunotherapy as a promising treatment strategy for dMMR colorectal cancer with brain metastasis: a case report](https://image.oaes.cc/f307aa50-af1a-400a-8837-c571682bc0a6/jcmt9085.fig.1.jpg)
Figure 1. This figure provides histological images of the primary ascending colon tumor and the brain metastasis. Subfigures include (A) (HE stain of the ascending colon tumor), (B) (HE stain of the brain metastasis), and (C-F) illustrating the immunohistochemical status of MMR proteins in the brain metastasis.