case_images: PMC7591986_01
case_images: Right testicle. On cut surface shows a poorly defined 1.8 cm paratesticular tumor.
case_images: CRIPA2020-8789143.001.jpg
case_images: PMC7591986_01_CRIPA2020-8789143.001.jpg
case_images: fig1
case_images: The gross examination showed a testicle with 3.5 cm in diameter, and the cut surface presented a poorly defined tan tumor of 1.8 cm, occupying the vaginal tunica and epididymis and infiltrating the testicular parenchyma (Figure 1).
case_images: Cystic-looking tumor, with intermixed papillary projections.
case_images: CRIPA2020-8789143.002.jpg
case_images: PMC7591986_01_CRIPA2020-8789143.002.jpg
case_images: fig2
case_images: In histological sections, a cystic neoplasm was observed, with hierarchical papillary projections, covered by one or several epithelial layers of columnar and hobnail cells with moderate atypia and scant mitosis (Figures 2-4).
case_images: Hierarchical papillae with stroma of edematous appearance. 5x HyE.
case_images: CRIPA2020-8789143.003.jpg
case_images: PMC7591986_01_CRIPA2020-8789143.003.jpg
case_images: fig3
case_images: In histological sections, a cystic neoplasm was observed, with hierarchical papillary projections, covered by one or several epithelial layers of columnar and hobnail cells with moderate atypia and scant mitosis (Figures 2-4).
case_images: Papillae covered by several layers of columnar cells with moderate atypia. HyE 40x.
case_images: CRIPA2020-8789143.004.jpg
case_images: PMC7591986_01_CRIPA2020-8789143.004.jpg
case_images: fig4
case_images: In histological sections, a cystic neoplasm was observed, with hierarchical papillary projections, covered by one or several epithelial layers of columnar and hobnail cells with moderate atypia and scant mitosis (Figures 2-4).
case_images: Epithelial membrane antigen.
case_images: CRIPA2020-8789143.005.jpg
case_images: PMC7591986_01_CRIPA2020-8789143.005.jpg
case_images: fig5
case_images: Immunohistochemical reactions were performed, resulting PAX-8, epithelial membrane antigen (EMA), and cytokeratin 7 positive (Figures 5-7), confirming the diagnosis of borderline serous tumor.
case_images: Cytokeratin 7.
case_images: CRIPA2020-8789143.006.jpg
case_images: PMC7591986_01_CRIPA2020-8789143.006.jpg
case_images: fig6
case_images: Immunohistochemical reactions were performed, resulting PAX-8, epithelial membrane antigen (EMA), and cytokeratin 7 positive (Figures 5-7), confirming the diagnosis of borderline serous tumor.
case_images: PAX8.
case_images: CRIPA2020-8789143.007.jpg
case_images: PMC7591986_01_CRIPA2020-8789143.007.jpg
case_images: fig7
case_images: Immunohistochemical reactions were performed, resulting PAX-8, epithelial membrane antigen (EMA), and cytokeratin 7 positive (Figures 5-7), confirming the diagnosis of borderline serous tumor.
case_images: (a, b and c) The tumor was negative for calretinin, estrogen, and progesterone receptors, respectively.
case_images: CRIPA2020-8789143.008.jpg
case_images: PMC7591986_01_CRIPA2020-8789143.008.jpg
case_images: fig8
case_images: The tumor cells were negative for calretinin, estrogen, and progesterone receptors (Figure 8).