S5793 Liver Abscess and ARDS in a Healthy Young Male Following Routine Dental Cleaning: An Uncommon Sequelae of Group G Streptococcal bacteremia

Introduction: Pyogenic liver abscess (PLA) is rare in immunocompetent individuals in developed countries and is typically linked to preexisting comorbidities. Group G Streptococcus (GGS), part of the normal oral flora, is an infrequent pathogen in PLA. We present a case of GGS-induced liver abscess and Acute Respiratory Distress Syndrome (ARDS) in a healthy young male without risk factors following a routine dental cleaning. Case Description/Methods: A 19-year-old previously healthy man presented with 5 days of worsening right upper quadrant pain, fever and chills. He denies alcohol/tobacco/drug use, chronic illnesses, and recent travel. The only notable history was a dental cleaning 2 weeks prior. Initial labs showed elevated transaminases and lactic acid. Computed tomography revealed a 6 cm hepatic abscess, splenomegaly, and bilateral lower lobe infiltrates. Blood cultures were positive for gram-positive cocci. He was started on intravenous piperacillin-tazobactam and underwent IR-guided abscess drainage. Within 24 hours, he developed respiratory distress requiring intubation and ARDS was clinically diagnosed. Post-extubation, antibiotics were narrowed to ampicillin-sulbactam. Recurrent fevers prompted chest imaging, revealing a pleural effusion requiring chest tube drainage. Cultures from pleural fluid, urine, and repeat blood draws were negative. Final blood culture results confirmed GGS. Epstein-Barr virus, cytomegalovirus, and hepatobiliary scan ruled out other sources. He improved with ertapenem and was discharged with outpatient follow-up. Discussion: PLA in healthy individuals is rare. GGS, though less virulent than Group A Streptococcus, can cause invasive disease post-mucosal trauma. This patient likely experienced transient bacteremia from dental manipulation, resulting in hepatic seeding and abscess formation. Rapid progression to ARDS post-drainage highlights the systemic risks of untreated PLA and the inflammatory cascade associated with GGS. This case emphasizes the importance of detailed history-taking, particularly after routine procedures. Even in immunocompetent hosts, GGS can lead to severe infection. Young patients with RUQ pain and systemic symptoms should be evaluated for PLA. Early recognition and multidisciplinary care are critical to favorable outcomes as complications of PLA, such as ARDS, can occur due to systemic inflammatory response. This case adds to the limited literature on GGS-induced liver abscess in healthy individuals, highlighting the systemic implications of what may appear to be a routine outpatient procedure.