Prostate cancer presenting as brain metastasis with concurrent elevation of carcinoembryonic antigen and carbohydrate antigen 19-9 levels: illustrative case.

Key Points

• To explore the rare occurrence of brain metastases from prostate cancer with elevated tumor markers CEA and CA19-9.
• Illustrative case report detailing patient history and treatment
• Assessment of CEA and CA19-9 levels at diagnosis
• Description of multimodal treatment approaches applied
• Brain metastases identified as a rare manifestation of prostate cancer
• Elevated CEA and CA19-9 levels noted at diagnosis
• The patient achieved a favorable outcome following multimodal treatment strategies.