Background: Streptococcus anginosus group (SAG) is gram-positive streptococci and a commensal in the upper airway, gastrointestinal and conceptive swathe. It is not recognized as a pathogen that causes the disease; moreover, death due to the infection is also unusual. However, they can cause invasive infections and induce purulent infection with abscess formation under certain conditions. Case Presentation: We report a rare case of purulent pericarditis in a male deceased who presented with sudden death, and the history from next-of-kin was not helpful. The underlying purulent pericarditis and the culprit organism were identified via post-mortem examination. Local spread from adjacent organs is rare. Conclusion: SAG pyogenic pericarditis is an infrequent but severe and fatal condition. A holistic approach to the case must emphasize post-mortem findings in a case where the history is limited, especially in forensic practice. There are two crucial processes are required to determine the cause of death. Firstly, through a thorough autopsy and secondly, by understanding causation. To opine an end due to a commensal pathogen is the most formidable task in forensic pathology, and conscientious analysis of post-mortem investigations is vital.
Key words: End-of-life, Streptococcus anginosus group, post-mortem appraisal, pussy infected, septic, pancarditis, forensic pathology, commensal pathogen, liver abscess.
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