We present 5 paratesticular tumors, which manifested ovarian-type stroma and various serous müllerian epithelial structures including serous fallopian-like epithelium and proliferations closely mimicking cystic serous borderline tumors of the ovary. In addition, 3 of the tumors in our series revealed a solid epithelial component, which was morphologically and immunohistochemically similar to so called "female adnexal tumor of probable wolffian origin," which is a rare neoplasm described so far only in the female genital tract, retroperitoneum, and the pelvic cavity. In analogy with mixed epithelial and stromal tumors of the kidney, which are renal neoplasms producing ovarian-type stroma, we suggest to designate the above paratesticular tumors containing ovarian-type stroma as "mixed epithelial and stromal tumors of the paratestis with features of cystic serous borderline tumor" (cases 1 and 2) and "mixed epithelial and stromal tumors of the paratestis with male adnexal tumor of probable wolffian origin" (cases 3-5).

• MeSH
• Cystadenoma metabolism   pathology   MeSH
• Immunohistochemistry MeSH
• Middle Aged MeSH
• Humans MeSH
• Testicular Neoplasms metabolism   pathology   MeSH
• Check Tag
• Middle Aged MeSH
• Humans MeSH
• Male MeSH
• Publication type
• Journal Article MeSH
• Case Reports MeSH

• MeSH
• Genital Neoplasms, Male classification   pathology   MeSH
• Publication type
• Atlas MeSH

• Conspectus
• Patologie. Klinická medicína
• NML Fields
• onkologie
• patologie

• MeSH
• Genitalia, Male MeSH
• Neoplasms MeSH
• Urologic Neoplasms MeSH

• Conspectus
• Patologie. Klinická medicína

• MeSH
• Male Urogenital Diseases diagnosis   pathology   MeSH
• Kidney Neoplasms diagnosis   pathology   MeSH
• Publication type
• Atlas MeSH

• Conspectus
• Patologie. Klinická medicína
• NML Fields
• andrologie
• urologie