• Tae Hoon Oh and Seung Chol Park.
• Department of Urology, Wonkwang University Hospital, Institute of Wonkwang Medical Science, Iksan, Korea.
• Medicine (Baltimore). 2022 Jul 29; 101 (30): e29428e29428.

RationaleCancer is a well-recognized cause of fever, which is related to cytokines produced by malignant cells. Prostate cancer presenting with fever and other inflammatory markers as a paraneoplastic syndrome rarely occurs.Patients Concerns And DiagnosesWe describe the case of high fever and lower-urinary tract symptoms that progressed 1 month prior to presentation. A 78-year-old man had been diagnosed with prostate cancer 8 months ago. He received androgen deprivation therapy with leuprolide acetate 22.5 mg for every 3 months. Castration-resistant prostate cancer was diagnosed due to elevated prostate specific antigen (1639 ng/mL) and cancer fever.InterventionThe patient received docetaxel-based systemic chemotherapy 50 mg/mm2 biweekly. Naproxen 500 mg was administered twice a day.OutcomesAfter one cycle of systemic chemotherapy, the patient had no major side effects, no more fever was observed, and the systemic condition improved.ConclusionDifferentiating cancer-related fever from infection-related fever is important for appropriate patient management. In this case, fever appeared as the first symptom of castration-resistant prostate cancer and was managed by naproxen and resolved with systemic chemotherapy.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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