title: Education and Imaging. Gastrointestinal: painful anal mass in a young patient with rectal bleeding.
authors.affiliation: Department of Gastroenterology, University Hospital of Patras, Rio, Greece.
authors.forename: K C
authors.initials: KC
authors.lastname: Thomopoulos
authors.forename: H P
authors.initials: HP
authors.lastname: Kourea
authors.forename: S F
authors.initials: SF
authors.lastname: Assimakopoulos
authors.forename: G J
authors.initials: GJ
authors.lastname: Theocharis
mesh_terms: D000328:Adult; D001005:Anus Neoplasms / Q000150:complications / Q000175:diagnosis / Q000473:pathology*; D014408:Biomarkers, Tumor / Q000032:analysis; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D058965:MART-1 Antigen / Q000032:analysis; D008297:Male; D008545:Melanoma / Q000150:complications / Q000175:diagnosis / Q000473:pathology*; D058950:Melanoma-Specific Antigens / Q000032:analysis; D051739:Microphthalmia-Associated Transcription Factor / Q000032:analysis; D010146:Pain / Q000209:etiology*; D012007:Rectum; D009418:S100 Proteins / Q000032:analysis; D058951:gp100 Melanoma Antigen
chemical_list: D014408:Biomarkers, Tumor; D058965:MART-1 Antigen; D058950:Melanoma-Specific Antigens; D051739:Microphthalmia-Associated Transcription Factor; C548637:PMEL protein, human; D009418:S100 Proteins; D058951:gp100 Melanoma Antigen