title: [An unusual perianal abscess].
abstract: Aggressive angiomyxoma (AA) is a mesenchymal tumour occurring in connective tissue of the perineum or lower pelvis with a marked tendency to local recurrence but which usually does not metastasize. Only 130 cases had been reported to date. We report the case of a 58-year-old woman, presenting with a pelvi-perineal mass, which was considered to be an anal abscess. After surgical excision, an AA was diagnosed, with classical histological features (myxoid and vascular components) and which was positive for vimentin and CD34. This case report shows that clinical diagnosis of AA is difficult and that delayed diagnosis can prevent optimal treatment of these tumors.
authors.affiliation: Service d'Anatomie et Cytologie Pathologiques, Hôpital Nord, Marseille. mariesoulier@hotmail.com
authors.forename: Marie
authors.initials: M
authors.lastname: Soulier
authors.forename: Lucile
authors.initials: L
authors.lastname: Andrac-Meyer
authors.forename: Stéphane
authors.initials: S
authors.lastname: Berdah
authors.forename: Stéphane
authors.initials: S
authors.lastname: Garcia
authors.forename: Séverine
authors.initials: S
authors.lastname: Meunier-Carpentier
authors.forename: Colette
authors.initials: C
authors.lastname: Taranger-Charpin
mesh_terms: D000038:Abscess / Q000175:diagnosis / Q000601:surgery*; D001004:Anus Diseases / Q000175:diagnosis / Q000601:surgery*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008875:Middle Aged; D009232:Myxoma / Q000175:diagnosis / Q000601:surgery*; D010386:Pelvic Neoplasms / Q000175:diagnosis / Q000601:surgery*; D010502:Perineum; D016896:Treatment Outcome