Hello can u tell me what i do histopathology report : section show poorly differentiated mucinous adenocarcinoma with ulceration of mucosal surface?

This sounds: Like a report from a colon, large intestine, biopsy. A cancer is present, and it crosses the surface o the bowel. Additional treatment will be necessary, likely starting with surgery.

Cancer: It is a subtype of cancer that arises from cell of the glands that produces some mucin/mucous. Where is this located? Colon? You need to discuss further re- treatment plan with your oncology team. Treatment and everything will depend on what kind of cancer is this? The stage? The molecular pattern/biology of the cancer? Your overall condition? Etc. Good luck.