Mycotic aneurysms of the abdominal aorta due to Listeria monocytogenes

Rupture of Abdominal Aortic Aneurysm due to Listeria Monocytogenes infection

Infective native aortic aneurysms (INAA) caused by Listeria monocytogenes are rare, with most cases involving Streptococcus sp. We report a case of a woman in her mid-60s who presented with a contained rupture of an infrarenal abdominal aortic aneurysm (AAA) due to Listeria The woman presented with intermittent abdominal and lower back pain, malaise, nausea, elevated inflammatory markers and ketoacidosis. CT angiography revealed a 40 mm AAA with inflammation and rupture. Intravenous ampicillin and gentamicin were initiated, and emergency open aortic repair was performed. Cultures confirmed Listeria infection. Postoperative neurological symptoms resolved, and the patient improved with continued antibiotics. One month postoperatively, she was asymptomatic with normalised inflammatory markers. This case underscores the rarity of Listeria-induced aneurysms and highlights the need for international registries to guide the management of INAA and further research on optimal surgical management.

Spontaneous rupture of aortic aneurysm due to Listeria monocytogenes in an immunocompetent patient and review of the literature

Infectious aneurysms represent <5 % of cases [1] with a crucial and challenging diagnosis. Staphylococcus, Streptococcus, Enterobacteria are mostly involved but unusual pathogens like Listeria monocytogenes can be responsible. Collecting data of these rare situations allows to improve diagnosis. We report a case of L. monocytogenes aortic aneurysm, at a departmental hospital, in a 77-year-old immunocompetent patient without endovascular material, with an antecedent of colorectal carcinoma in remission and alcoholism, and compared it with literature data. Blood cultures were negative but culture of aortic tissues was positive. Only 19 similarly cases were identified since 1965. Infectious aneurysm represents a serious condition with a difficult diagnosis needing multiple approaches. When an infection is suspected, collection of blood culture and tissue of the aortic wall are needed as well as biomolecular and serological tools for exigent pathogens.

Foodborne pathogens and their association with well-known enteric infections and emerging non-communicable disorders

Annually, numerous new cases of communicable and non-communicable diseases are diagnosed, and consumption of food/water contaminated with different levels of microbial and chemical agents is responsible for a considerable portion of this burden. Generally, acute foodborne diseases are readily identified, while chronic deleterious effects are often neglected and rarely blamed for health consequences. The present work narrates a journey from consuming foods containing bacteria/bacterial toxins to developing chronic diseases, making humans more susceptible to emerging diseases. We aim to shed light on the chronic effects of foodborne diseases, particularly gastrointestinal disorders (GIDs) and inflammatory bowel diseases (IBDs), which are common chronic symptoms of most foodborne diseases.

Listeria monocytogenes infectious abdominal aortic aneurysm: Case report and review of the literature

Listeria monocytogenes-caused primary infected abdominal aortic aneurysm is a very rare disease. Aortic wall tissue sampling is essential for confirmation of diagnosis. Surgical repair and long-term antibacterial treatment are crucial for management.

Aortobronchial fistula and Listeria endograft infection after repeated T/EVAR: a rare combination

Here we present a rare combination of aortobronchial fistula and Listeria endograft infection after repeat endovascular aortic repair. Device retention, debridement and negative pressure wound therapy, in combination with suppressive antimicrobial therapy, led to satisfactory control of infection until the patient died due to another complication. The combination of an aortobronchial fistula and Listeria endograft infection has never been described before. This present case should encourage and show clinicians the importance of an interdisciplinary approach in highly difficult clinical courses.

Listeria monocytogenes infectious periaortitis: a case report from the infectious disease standpoint

Background

Endograft infection is a rare but extremely dangerous complication of aortic repair (25–100% of mortality). We describe here the first case of Listeria monocytogenes abdominal periaortitis associated with a vascular graft. We also discuss the differential diagnosis of periaortitis and provide a literature review of L. monocytogenes infectious aortitis.

Case presentation

Nine months after endovascular treatment of an abdominal aortic aneurysm (abdominal stent graft), a 76-year-old man was admitted for severe abdominal pain radiating to the back. Laboratory tests were normal apart from elevated C-reactive protein (CRP). Injected abdominal computed tomography (CT) showed infiltration of the fat tissues around the aortic endoprosthesis and aneurysmal sac expansion; positron emission tomography with 2-deoxy-2-[fluorine-18]fluoro- D-glucose integrated with computed tomography (18F-FDG PET/CT) showed a hypermetabolic mass in contact with the endoprosthesis. Blood cultures were negative. At surgical revision, an infra-renal peri-aortic abscess was evident; post-operative antibiotic therapy with ciprofloxacin and doxycycline was started. Cultures of intraoperative samples were positive for L. monocytogenes. Results were further confirmed by a broad-range polymerase chain reaction (PCR) and next-generation sequencing. Antibiotic treatment was switched to intravenous amoxicillin for 6 weeks. Evolution was uneventful with decrease of inflammatory parameters and regression of the abscess.

Conclusion

An etiologic bacterial diagnosis before starting antibiotic therapy is paramount; nevertheless, culture-independent methods may provide a microbiological diagnosis in those cases where antimicrobials are empirically used and when cultures remain negative.