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Updated: Mar 13, 2026

Teratoma Generation in the Testis Capsule
Published on: November 7, 2011
Primary retroperitoneal mature cystic teratoma in an adult: A case report
Hassan Peyvandi1, Fahimeh Arsan1, Athena Alipour-Faz1
1Clinical Research Development Center of Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Background:
Mature cystic teratoma is one of the most common tumors of the ovaries; however, primary retroperitoneal lesions are rare entities in adults.
Case Summary:
We report a case of a 33 year-old woman noticing a mass in her epigastric and left upper abdominal region without any specific signs and symptoms. Radiological evaluation revealed a retroperitoneal mass with extension from the posterior aspect of the pancreas to the pelvic cavity, composed of calcifications and cystic elements.
Conclusion:
The tumor was resected through a midline laparotomy and the pathology report confirmed the diagnosis of a mature cystic teratoma with no evidence of malignancy or immature components.

