title: Squamous cell carcinoma occurring in chronic perianal pyoderma.
mesh_terms: D000694:Anal Gland Neoplasms / Q000150:complications*; D002294:Carcinoma, Squamous Cell / Q000150:complications*; D002908:Chronic Disease; D006801:Humans; D008297:Male; D008875:Middle Aged; D011711:Pyoderma / Q000150:complications*; D012003:Rectal Fistula / Q000601:surgery; D016038:Skin Transplantation; D013518:Surgery, Plastic; D014182:Transplantation, Autologous; D014945:Wound Healing