16 years old girl complaint of Something protruding from anus for 10years and BPR for 6 months

16 years old girl complaint of Something protruding from anus for 10years and BPR for 6 months
LOW and LOA present
No family history of colon cancer
Colonoscopies finding

  • multiple polyps with malignant looking growths along the colon from anus to caecum .
  • What is your provisional diagnosis ?
  • And please give any suggestion for management .