Klin Onkol 2025; 38(3): 209-212. DOI: 10.48095/ccko2025209.
Background: In present days we have the possibility to use new antibiotic drug cefiderocol for the treatment of multiple drug resistant bacterial infections. This infections are the result of preceding and repeating antibiotic therapy mainly in immunocompromised patients. Case: In our case report we present a young woman with acute leukemia with complicated infection in the perianal and rectal area with sepsis development caused by Pseudomonas aeruginosa with lower sensitivity for carbapenems at the early time of allogeneic transplantation of hematopoiesis due to acute leukemia, when she is under the negative influence of chemotherapy and immunosuppressive drugs. We emphasize the adverse effects of colimycine type antibiotics and their interactions with other drugs with the organ toxicity development. Conclusion: The newly available antibiotic cefiderocol with low potential of adverse events and drug interactions demonstrates a benefit in the treatment of the patient described.