Provided herein are methods of treating a solid malignant tumor using antigen-specific T cells and methods of managing tumor flare in treatment of a solid malignant tumor using antigen-specific T cells. The methods provided herein improve the safety of treatment by informing the patient about the potential risks for tumor flare, telling the patient to contact his or her physician if tumor swelling occurs, counseling a patient with Waldeyer's ring lymphadenopathy to contact his or her physician if shortness of breath or stridor occurs, or grading and managing tumor flare developed in the patient.
