case_images: PMC5872674_01
case_images: Necrotic tumor in the upper pole of the spleen.
case_images: CRIS2018-2620301.001.jpg
case_images: PMC5872674_01_CRIS2018-2620301.001.jpg
case_images: fig1
case_images: The necrotic tumor was 3 cm (Figure 1).
case_images: Hematoxylin and eosin staining, x200. Microscopically, the tumor comprised epithelial cells (Arrow), with an eosinophilic cytoplasm and an abnormal core.
case_images: CRIS2018-2620301.002.jpg
case_images: PMC5872674_01_CRIS2018-2620301.002.jpg
case_images: fig2
case_images: Microscopically, the tumor comprised epithelial cells, with an eosinophilic cytoplasm and an abnormal core (Figure 2).
case_images: Immunostaining of the tumor was performed with TTF-1, CK7, and CK20, all of which were positive (x200).
case_images: CRIS2018-2620301.003.jpg
case_images: PMC5872674_01_CRIS2018-2620301.003.jpg
case_images: fig3
case_images: CK7, and CK20, all of which were positive (Figure 3). CK7 is a marker used to assess the reactivity of tumor membrane cells, while TTF-1 is a nuclear stain of tumor cells.