case_images: PMC9807342_01
case_images: Abdominal CT findings. A huge prostate mass (a) with a volume of 220 mL extending to the left retroperitoneum (b).
case_images: IJU5-6-30-g001.jpg
case_images: PMC9807342_01_IJU5-6-30-g001.jpg
case_images: iju512541-fig-0001
case_images: Abdominal CT revealed a huge prostate mass (Fig. 1a) with a volume of 220 mL extending to the left retroperitoneum (Fig. 1b).
case_images: Histopathological findings. A diffuse proliferation of large lymphoid cells was observed using hematoxylin and eosin staining (a). Immunohistochemistry showed positive staining using CD20 (b). The Ki-67 proliferation index was more than 80% (c). All bars indicate 50 mum.
case_images: IJU5-6-30-g002.jpg
case_images: PMC9807342_01_IJU5-6-30-g002.jpg
case_images: iju512541-fig-0002
case_images: The patient underwent prostate biopsy 3 days after the first visit, and was diagnosed with DLBCL based on the following histopathological findings: a diffuse proliferation of large lymphoid cells was observed using hematoxylin and eosin staining (Fig. 2a), and immunohistochemistry showed positive staining for CD20 (Fig. 2b). The Ki-67 proliferation index was more than 80% (Fig. 2c).