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Published on: April 11, 2012
Adrenal gland hemorrhage in patients with fatal bacterial infections
Jeannette Guarner1, Christopher D Paddock, Jeanine Bartlett
1Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA. Jeanette.Guarner@choa.org
Abstract:
A wide spectrum of adrenal gland pathology is seen during bacterial infections. Hemorrhage is particularly associated with meningococcemia, while abscesses have been described with several neonatal infections. We studied adrenal gland histopathology of 65 patients with bacterial infections documented in a variety of tissues by using immunohistochemistry. The infections diagnosed included Neisseria meningitidies, group A streptococcus, Rickettsia rickettsii, Streptococcus pneumoniae, Staphylococcus aureus, Ehrlichia sp., Bacillus anthracis, Leptospira sp., Clostridium sp., Klebsiella sp., Legionella sp., Yersinia pestis, and Treponema pallidum. Bacteria were detected in the adrenal of 40 (61%) cases. Adrenal hemorrhage was present in 39 (60%) cases. Bacteria or bacterial antigens were observed in 31 (79%) of the cases with adrenal hemorrhage including 14 with N. meningitidis, four with R. rickettsii, four with S. pneumoniae, three with group A streptococcus, two with S. aureus, two with B. anthracis, one with T. pallidum, and one with Legionella sp. Bacterial antigens were observed in nine of 26 non-hemorrhagic adrenal glands that showed inflammatory foci (four cases), edema (two cases), congestion (two cases), or necrosis (one case). Hemorrhage is the most frequent adrenal gland pathology observed in fatal bacterial infections. Bacteria and bacterial antigens are frequently seen in adrenal glands with hemorrhage and may play a pathogenic role. Although N. meningitidis is the most frequent bacteria associated with adrenal gland pathology, a broad collection of bacteria can also cause adrenal lesions.
Insights
Bacterial infections frequently cause adrenal gland pathology, with hemorrhage being the most common finding in fatal cases. Bacteria are often detected in hemorrhaged adrenal glands, suggesting a pathogenic role for various bacterial species.
Area of Science:
- Pathology
- Microbiology
- Infectious Diseases
Background:
- Adrenal gland pathology is a known complication of bacterial infections.
- Hemorrhage is specifically linked to meningococcemia, while abscesses occur in neonatal infections.
Purpose of the Study:
- To investigate the histopathology of adrenal glands in patients with bacterial infections.
- To determine the frequency and types of adrenal lesions and their association with specific bacteria.
Main Methods:
- Analysis of adrenal gland histopathology in 65 patients with documented bacterial infections.
- Use of immunohistochemistry to detect bacteria and bacterial antigens in adrenal tissues.
- Correlation of findings with specific bacterial species identified in various tissues.
Main Results:
- Bacteria were detected in the adrenal glands of 61% of patients.
- Adrenal hemorrhage was observed in 60% of cases.
- Bacteria or antigens were found in 79% of hemorrhaged adrenal glands, with Neisseria meningitidis being the most frequent pathogen, but other bacteria were also implicated.
Conclusions:
- Hemorrhage is the predominant adrenal gland pathology in fatal bacterial infections.
- Bacteria are frequently present in hemorrhaged adrenal glands, indicating a potential pathogenic role.
- A diverse range of bacteria, not just Neisseria meningitidis, can cause adrenal lesions.
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