Malignant paraganglioma of the prostate invading the bladder and bilateral seminal vesicles: a case report.

Malignant paraganglioma (PGL) of the prostate is extremely rare, with only 3 cases reported in the English literature to date. In this article, we present a case of malignant prostatic PGL invading the bladder and bilateral seminal vesicles, in which the patient had a history of long-term haematuria and normal serum prostate specific antigen (PSA) level, and was misdiagnosed as a bladder tumour invading the prostate preoperatively. As this case belongs to functional tumour, there is a risk of developing hypertensive crisis during diagnostic biopsy or radical resection. The CT manifestations of prostatic PGL are characteristic, but its imaging features are rarely described due to the rarity of the tumour site. Meanwhile, improving the comprehensive understanding of CT, MRI, functional imaging, and clinical features of prostate PGL is conducive to make the correct diagnosis before surgery and ensure the safety of surgical treatment.