Mycotic Abdominal Aortic Aneurysm Caused byBacteroides ThetaiotaomicronandAcinetobacter Lwoffii: The First Case in Korea

Abstract

Mycotic aneurysms are uncommon, but are fatal without appropriate management. Previous reports have shown that anaerobes and gram-negative organisms are less common but more dangerous than other causative agents of mycotic aneurysm. We report the case of a 60-year-old man with poorly controlled diabetes mellitus and atherosclerosis in the aorta, and a 10-day of history of lower abdominal pain and fever. This man was diagnosed with an uncommon abdominal aorta mycotic aneurysm caused by Bacteroides thetaiotaomicron and Acinetobacter lwoffii. The aneurysm was successfully treated with antibiotics therapy and aorto-bi-external iliac artery bypass with debridement of the infected aortic wall. We present this case together with a review of the relevant literature.

Mycotic Aneurysm with Iliac Artery-Colonic Fistula

“…Mycotic aneurysms are saccular vascular dilatations caused by the destruction of the vessel wall by invasive organisms. It may result from hematogenous spread, lymphatic spread, or direct extension from an adjacent infected organ [6]. Mycotic aneurysms can involve any artery, but the aorta is the most frequently affected section [7].…”

Septic arthritis caused by Bacteroides thetaiotaomicrom: A case report and review

“…B. thetaiotaomicrom has been described as a pathogen in infections mainly of abdominal origin, postsurgical, meningitis and otitis. It is a very rare anaerobic, all cases reported in the literature are shown in table 2 [11][12][13][14][15][16][17][18][19][20][21][22][23][24]. The presence of concomitant chronic pathologies in more than half of the collected patients may suggest an opportunistic behavior of B. thetaiotaomicrom.…”

Isolation and Characterization of Acinetobacter lwoffii from the Intestine of Grass Carp (Ctenopharyngodon idella)

“…Due to its ubiquitous nature, it is a potential opportunistic pathogen in patients with impaired immune systems and it has been identified as a cause of nosocomial infections (Bergogne-Berezin et al, 1996;Forster et al, 1998). It is a well-known pathogen associated with gastritis, septicemia, pneumonia, meningitis, and urinary tract infections in humans (Luciano et al, 2007;Wareham et al, 2008;Sule et al, 1997;Idzenga et al, 2006;Medina et al, 2007;Kim et al, 2014). Infections caused by A. lwoffii in previously reported cases have mostly concentrated in humans; few reports are available in fish (Kozińska et al, 2014;Dadar et al, 2016).…”