Publications by authors named "Geoffrey Rossi"

Background: Liver abscess (LA) is a rare but potentially serious condition with a high mortality rate. Current epidemiological data of LA patients requiring intensive care unit (ICU) admission are limited.

Methods: This multicentre retrospective study included adults admitted to 24 ICUs in France between January 2010 and December 2020.

View Article and Find Full Text PDF

Background: Currently, diagnosis of bacterial infections is based on culture, possibly followed by the amplification and sequencing (Sanger method) of the 16S rDNA - encoding gene when cultures are negative. Clinical metagenomics (CMg), i.e.

View Article and Find Full Text PDF

Background: Shotgun metagenomics (SMg) sequencing has gained a considerable interest, as it enables the detection of any microorganisms through a single analysis. Due to the limitations of standard microbiological approaches, the microbial documentation of liver abscesses (LA), which is crucial for their medical management, can be difficult. Here we aimed to compare the performance of SMg with standard approaches for the microbiological documentation of LA.

View Article and Find Full Text PDF
Article Synopsis
  • Candida pyogenic liver abscesses (C-PLA) are rare in patients without blood disorders and often arise from biliary issues with a polymicrobial background.
  • Patients with C-PLA tend to have significant underlying health problems, with over half presenting with sepsis requiring intensive care.
  • The study indicates a higher risk of recurrence for C-PLA compared to bacterial liver abscesses, suggesting a need for more aggressive management strategies.
View Article and Find Full Text PDF

Introduction: Amoebic liver abscess (ALA) is the fourth cause of mortality by parasitic infection. This study aimed to assess clinical, radiological and therapeutic characteristics of patients admitted for amoebic liver abscess compared to pyogenic abscess in a French digestive tertiary care-centre.

Material And Method: The charts of patients hospitalized for a liver abscess between 2010 and 2020 were retrospectively assessed then separated in two groups: amoebic liver abscess and pyogenic liver abscess from portal underlying cause.

View Article and Find Full Text PDF
Article Synopsis
  • Objective structured clinical examinations (OSCE) help assess medical students' skills, and this study evaluated third-year students' roles as standardized patients in these exams.
  • In a pilot session, their OSCE scores were compared with third-year students who did not participate, revealing that those involved had significantly better scores (17 vs. 14.5 out of 20).
  • Most participating students felt that being standardized patients reduced their stress, enhanced their preparedness, and improved their communication skills, indicating the potential for broader implementation of this approach in medical education.
View Article and Find Full Text PDF

Introduction: Sarcoidosis is a systemic granulomatosis of unknown etiology, characterized by the presence of immune granulomas. Liver damage is a relatively common extra-pulmonary manifestation, occurring in 3.6-30% of cases.

View Article and Find Full Text PDF
Article Synopsis
  • Enterococci are the most common gram-positive bacteria found in pyogenic liver abscesses (PLA), seen in 19% of cases studied from a French university hospital between 2010 and 2019.
  • The study found that PLA involving Enterococcus spp. were more frequently linked to biliary causes and post-surgical infections compared to those without the bacteria.
  • Additionally, the presence of Enterococcus spp. was associated with increased risks of 3-month mortality and primary treatment failure, especially in cases with portal vein thrombosis.
View Article and Find Full Text PDF

Bacteriological diagnosis is traditionally based on culture. However, this method may be limited by the difficulty of cultivating certain species or by prior exposure to antibiotics, which justifies the resort to molecular methods, such as Sanger sequencing of the 16S rRNA gene (Sanger 16S). Recently, shotgun metagenomics (SMg) has emerged as a powerful tool to identify a wide range of pathogenic microorganisms in numerous clinical contexts.

View Article and Find Full Text PDF
Article Synopsis
  • Pyogenic liver abscess (PLA) is a serious illness that can lead to bad outcomes like treatment failure or death.
  • A study looked at 302 patients with PLA to find out what factors might predict these bad outcomes.
  • They discovered that certain conditions, like having other diseases or specific types of infections, made patients more likely to have trouble, but treating the abscess helped reduce the chance of dying.
View Article and Find Full Text PDF

Rituximab (RTX), an antibody targeting CD20, is widely used as a first-line therapeutic strategy in B cell-mediated autoimmune diseases. However, a large proportion of patients either do not respond to the treatment or relapse during B cell reconstitution. Here, we characterize the cellular basis responsible for disease relapse in secondary lymphoid organs in humans, taking advantage of the opportunity offered by therapeutic splenectomy in patients with relapsing immune thrombocytopenia.

View Article and Find Full Text PDF

Hepatic sarcoidosis is a relatively common manifestation of extrapulmonary sarcoidosis. It occurs in 20 to 30% of cases and is rarely severe. However, a cluster of patients may develop severe complications such as cirrhosis and portal hypertension.

View Article and Find Full Text PDF
Article Synopsis
  • - The study investigates the emergence of hypervirulent Klebsiella pneumoniae in liver abscesses in Paris, focusing on a cohort of 199 patients from 2010-2015 with 31 specifically having abscesses caused by K. pneumoniae.
  • - Findings reveal that 52% of cryptogenic liver abscesses were caused by hypervirulent K. pneumoniae, which were often community-acquired, monomicrobial, and less common in cancer patients compared to noncryptogenic cases.
  • - The K. pneumoniae strains found in cryptogenic abscesses mainly belonged to K1 or K2 serotypes, exhibiting more virulence factors, indicating that these strains are becoming the primary pathogens in
View Article and Find Full Text PDF