Abdominal actinomycosis by Actinomyces shaaliae georgiae mimicking neoplasia

To our knowledge, this represents the first reported case of abdominal actinomycosis caused by <i>A. shaaliae georgiae</i> with this unique presentation. Actinomycotic lesions form purulent foci surrounded by extensive fibrosis, creating tumor-like masses that clinically and radiologically mimic neoplastic processes. This case expands the clinical spectrum and microbiological repertoire of <i>A. shaaliae georgiae</i>, emphasizing the critical importance of maintaining high clinical suspicion, implementing multidisciplinary diagnostic approaches, and ensuring appropriate antimicrobial management in abdominal actinomycosis to avoid unnecessary surgical interventions and improve patient outcomes.