title: Lung cancer metastasis to the external anal sphincter mimicking perianal abscess.
authors.affiliation: Department of General and Minimally-Invasive Surgery, Misericordia Hospital, Grosseto, Italy, fra.guerra.mail@gmail.com.
authors.forename: Francesco
authors.initials: F
authors.lastname: Guerra
authors.forename: Stefano
authors.initials: S
authors.lastname: Amore Bonapasta
authors.forename: Salvatore
authors.initials: S
authors.lastname: Tumbiolo
authors.forename: Edoardo
authors.initials: E
authors.lastname: Gentile
authors.forename: Andrea
authors.initials: A
authors.lastname: Coratti
mesh_terms: D000038:Abscess / Q000175:diagnosis; D000368:Aged; D001003:Anal Canal / Q000473:pathology*; D001004:Anus Diseases / Q000175:diagnosis; D001005:Anus Neoplasms / Q000556:secondary*; D001859:Bone Neoplasms / Q000556:secondary; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007085:Ilium / Q000473:pathology; D008175:Lung Neoplasms / Q000473:pathology*; D055752:Small Cell Lung Carcinoma / Q000556:secondary*