Highlights ■ First case series of aPDT+PBM for oral P. aeruginosa in oncology patients. ■ Complete lesion resolution in all cases (median healing time: 5 days). ■ High resistance to fluoroquinolones; aminoglycosides remained effective. ■ Combined light-based therapy is safe even in severe immunosuppression. ABSTRACT Objective: To describe a case series of oral Pseudomonas aeruginosa infections in oncology patients managed using combined antimicrobial photodynamic therapy and photobiomodulation in association with systemic antibiotic therapy guided by microbiological culture and antibiogram. Methods: […]