Department of Urology The First Hospital of Jilin University Changchun 130021 Jilin Province China;
Department of Gastroenterology The Qianwei Hospital of Jilin Province Changchun 130021 Jilin Province China;
Department of Urology The First Hospital of Jilin University Changchun 130021 Jilin Province China;
Department of Urology The First Hospital of Jilin University Changchun 130021 Jilin Province China;
Department of Andrology The First Hospital of Jilin University Changchun 130021 Jilin Province China;
Tunica vaginalis testis; Metastasis; Pancreatic adenocarcinoma; Literature review; Paratesticular tumor; Misdiagnosis; Case report;