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Updated: Feb 4, 2026

Teratoma Generation in the Testis Capsule
Published on: November 7, 2011
Primary Mucinous Borderline Tumor of the Testis: A Case Report
Takeshi Shirota1, Hiromi Nakanishi1, Tomoaki Hakariya1
1Division of Urology Japan Community Health Care Organization, Isahaya General Hospital Nagasaki Japan.
Introduction:
Testicular mucinous borderline tumor is a rare primary testicular neoplasm with a generally favorable prognosis. Herein, we report a case diagnosed after high orchiectomy, with a brief literature review.
Case Presentation:
A 77-year-old man presented with discomfort in the left scrotum. Computed tomography revealed enlargement and calcification of the left testis and indicated a testicular tumor. High orchiectomy was performed, and pathological examination revealed a mucinous borderline tumor. Postoperative upper and lower gastrointestinal endoscopy showed no abnormal findings, leading to the diagnosis of primary testicular mucinous borderline tumor. Twelve months postoperatively, no evidence of postoperative recurrence or metastasis was observed.
Conclusion:
We presented a rare case of testicular mucinous borderline tumor. Considering the existence of a case with metastasis, long-term imaging follow-up is advised.
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