case_images: PMC10879654_01
case_images: Representative CT of the bladder tumor. The pelvic CT scan shows uneven thickening of the anterior wall, right wall, and posterior wall of the bladder (indicated by the arrows).
case_images: cureus-0016-00000052688-i01.jpg
case_images: PMC10879654_01_cureus-0016-00000052688-i01.jpg
case_images: FIG1
case_images: Enhanced scanning showed relatively uniform enhancement, with average CT values of approximately 35 Hounsfield Units (HU), 45 HU, 63 HU, and 72 HU in the pre-contrast, arterial, venous, and equilibrium phases, respectively (Figure 1).
case_images: Intraoperative endoscopic figure of the bladder tumor. Intraoperatively, the bladder wall is observed to have diffuse thickening, a friable texture, and be prone to bleeding.
case_images: cureus-0016-00000052688-i02.jpg
case_images: PMC10879654_01_cureus-0016-00000052688-i02.jpg
case_images: FIG2
case_images: Intraoperatively, it was observed that the bladder had good capacity, and the bilateral ureteral orifices had a fissure-like appearance with normal peristalsis and urine flow (Figure 2).
case_images: Representative histological and immunohistochemical figures of the bladder tumor. (A) Histological examination (HE x100) revealed the presence of dense lymphocytic infiltration and some lymphoid follicles. Small to medium-sized centrocyte-like lymphocytes form diffuse infiltrates within the bladder lymphoid epithelial lesion (scale bar:100mum). (B) Immunohistochemistry examination reveals strong expression of CD3 in tumors (scale bar: 20mum).
case_images: cureus-0016-00000052688-i03.jpg
case_images: PMC10879654_01_cureus-0016-00000052688-i03.jpg
case_images: FIG3
case_images: Postoperative pathological examination of the bladder tumor showed (Figure 3) a proliferative lesion of lymphoid tissue in accordance with peripheral (cytotoxic) T-cell lymphoma, non-Hodgkin subtype (Figure 3A). Immunohistochemical staining (Figure 3B) indicated CD3 (+).