{Reference Type}: Journal Article {Title}: Pulmonary Actinomycosis in a 65-Year-Old Female with Poor Oral Dentition. {Author}: Yi S;Ghimire R;Sporn TA;Sutton AT;Lebron Figueroa DA;Markantonis JE; {Journal}: Diagnostics (Basel) {Volume}: 14 {Issue}: 13 {Year}: 2024 Jul 3 {Factor}: 3.992 {DOI}: 10.3390/diagnostics14131421 {Abstract}: Pulmonary actinomycosis is an uncommon clinical entity that can be challenging to diagnose due to its non-specific symptomatology. Misdiagnosis and delayed treatment may result in invasive procedures and extended antimicrobial treatment courses. We report a case involving a 65-year-old female with poor oral dentition admitted for acute respiratory failure subsequently found to have a left-sided pleural effusion and perihepatic abscess formation. Cytopathology examination and microbiology studies confirmed the diagnosis of pulmonary actinomycosis.