Anal cancer most commonly arises from squamous cells at the squamocolumnar junction. Other types of anal cancer are adenocarcinoma, lymphoma, and sarcoma.
What is the definition of anal cancer?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What is the definition of anal cancer? [/INST] \n Anal cancer most commonly arises from squamous cells at the squamocolumnar junction. Other types of anal cancer are adenocarcinoma, lymphoma, and sarcoma.</s>