An Unusual Case of Streptococcus pyogenes Causing Ruptured Aortic Mycotic Aneurysm

Case Reports in Infectious Diseases
Ali Someili, Anjali Shroff


A 70-year-old male with a complex past medical history presents with confusion and slurred speech for 24 hours. His exam was unremarkable, and his CT head was negative. Both his C-reactive protein and white blood cell count were elevated. As part of the delirium workup, blood cultures were done which grew Streptococcus pyogenes with no obvious source. He was treated with appropriate antibiotics. To determine the source, a white blood cell scan was done, which showed increased localization within a left-sided upper mediastinum mass. Subsequently, chest CT scan with contrast showed an acute type B aortic dissection with mycotic aneurysm. Consequently, he was taken urgently for surgical management. He completed 6 weeks of penicillin G and was discharged to a rehabilitation center. This case illustrates both a rare entity, mycotic aneurysm secondary to Streptococcus pyogenes, and the importance of getting an Infectious Diseases consult in the setting of an unknown source of bacteremia.


Dec 1, 1978·AJR. American Journal of Roentgenology·S L KaufmanS S Siegelman
Sep 1, 1992·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·G ValeroD F Talkington
May 1, 1992·Annals of Surgery·M N GomesR B Wallace
Nov 1, 1994·Australasian Radiology·T M SingP Tomlinson
May 20, 2000·Pediatric Cardiology·H BarthH Akintürk
Mar 26, 2003·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·Ron-Bin HsuShu-Hsun Chu
Nov 30, 2006·Asian Cardiovascular & Thoracic Annals·Tetsuro SanoHisataka Yasui
Feb 5, 2008·Journal of Vascular Surgery·Ron-Bin Hsu, Fang-Yue Lin
Nov 13, 2008·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Wai-Kit LeeOliver F Hennessy
Aug 20, 2010·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·M DuboisI Fourneau
Apr 12, 2012·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·Po-Lin ChenWen-Chien Ko
Jun 8, 2012·The Pediatric Infectious Disease Journal·Michelle A HoffmanArchana Chatterjee
Jun 14, 2013·Journal of Clinical Microbiology·Jason S BiswasNicholas Price
Jan 29, 2014·Infectious Disease Reports·Bradley J GardinerTony M Korman
Nov 8, 2014·Circulation·Karl SöreliusUNKNOWN European MAA collaborators
May 16, 2017·Case Reports in Surgery·Floryn CherbanykVéronique Erard
Oct 17, 2017·Annals of Vascular Diseases·Kazuo KushimotoEisuke Yokota
Dec 14, 2017·The Korean Journal of Thoracic and Cardiovascular Surgery·Hyo-Hyun KimHyun-Chel Joo

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