title: Rupture of the extracranial carotid artery caused by misdiagnosed infected pseudoaneurysm during deep cervical abscess drainage: A case report.
abstract: Infected aneurysms or pseudoaneurysms of the extracranial carotid artery are extremely rare, but they can lead to lethal complications. In some cases, infected pseudoaneurysms can be masked by the excessive inflammation of surrounding tissues. Here we describe the case of a 69-year-old woman with several comorbidities, who presented with a rapidly enlarging left neck bulge. CT was suggestive of an abscess involving the left common carotid artery. Colour Doppler ultrasound did not document intralesional flow. Abscess drainage under ultrasonographic assistance was attempted unsuccessfully, with collection of creamy, purple material. Surgical drainage of the abscess was, therefore, decided. As soon as necrotic tissue debridement was started, a massive haemorrhage originating from the common carotid artery invaded the surgical field. The carotid artery was then repaired with a bovine pericardial patch and covered with a pectoralis major muscle flap. The patient recovered without any neurological consequences. Revision of CT imaging revealed a very small misdiagnosed infected pseudoaneurysm. With better preoperative surgical planning and a good suspicion index, such a life-threatening emergency could have been avoided.
authors.affiliation: Otolaryngology Service, Head and Neck Department, "San Raffaele" Hospital, "Vita-Salute" University, Milan, Italy. Electronic address: disanto.davide@hsr.it.
authors.forename: Davide
authors.initials: D
authors.lastname: Di Santo
authors.affiliation: Otolaryngology Service, Head and Neck Department, "San Raffaele" Hospital, "Vita-Salute" University, Milan, Italy.
authors.forename: Leone
authors.initials: L
authors.lastname: Giordano
authors.affiliation: Otolaryngology Service, Head and Neck Department, "San Raffaele" Hospital, "Vita-Salute" University, Milan, Italy.
authors.forename: Giacomo
authors.initials: G
authors.lastname: Bertazzoni
authors.affiliation: Otolaryngology Service, Head and Neck Department, "San Raffaele" Hospital, "Vita-Salute" University, Milan, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Galli
authors.affiliation: Otolaryngology Service, Head and Neck Department, "San Raffaele" Hospital, "Vita-Salute" University, Milan, Italy.
authors.forename: Michele
authors.initials: M
authors.lastname: Tulli
authors.affiliation: Otolaryngology Service, Head and Neck Department, "San Raffaele" Hospital, "Vita-Salute" University, Milan, Italy.
authors.forename: Mario
authors.initials: M
authors.lastname: Bussi
mesh_terms: D000038:Abscess / Q000000981:diagnostic imaging* / Q000601:surgery; D000368:Aged; D016470:Bacteremia / Q000175:diagnosis*; D000071997:Blood Culture; D016063:Blood Loss, Surgical; D020212:Carotid Artery Injuries / Q000000981:diagnostic imaging* / Q000601:surgery; D017536:Carotid Artery, Common / Q000000981:diagnostic imaging* / Q000601:surgery; D003646:Debridement; D003951:Diagnostic Errors; D004322:Drainage; D005260:Female; D006801:Humans; D055624:Methicillin-Resistant Staphylococcus aureus; D013203:Staphylococcal Infections / Q000175:diagnosis* / Q000601:surgery
keywords: Bovine pericardial patch; Deep cervical abscess; Extracranial carotid artery rupture; Infected pseudoaneurysm; Pectoralis major muscle flap