For citations:

Tseimakh A.Е., Shoykhet I.N., Tseimakh E.A., Bedyan N.K., Makarenkov A.S. Multi-course photodynamic therapy in a patient with malignant tumor of the major duodenal papilla. Clinical case. Biomedical Photonics. 2025;14(3):39-42. https://doi.org/10.24931/2413-9432-2025-14-3-39-42