PMC4960929_01
(a) A 68-year-old patient was treated with total cystourethrectomy. Hematoxylin-eosin staining of the prostatic urethra reveals urothelial carcinoma. The arrow indicates groups of urothelial carcinoma cells invading into the vein. (b) Hematoxylin-eosin staining of metastatic brain tumor shows groups of well-differentiated urothelial carcinoma cells with necrosis, which is the same pathological findings of the origin of the tumor, the prostatic urethra. The tumor was attached to the dura mater
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F1
The pathological diagnosis revealed urothelial carcinoma with no metastasis to the lymph node but invasion into the vein [Figure 1a]. The pathological conclusion was that this was a well-differentiated urothelial carcinoma with necrosis, which was considered to have metastasized from the urothelial carcinoma of the prostatic urethra [Figure 1b].
(a) Magnetic resonance image (MRI) before the operation shows an irregularly shaped, heterogeneously enhanced mass with Gadolinium enhancement on T1 images. (b) MRI after the operation shows gross total removal of the tumor
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F2
Magnetic resonance imaging (MRI) showed an irregularly-shaped, heterogeneously-enhanced mass with gadolinium enhancement on T1-weighted images [Figure 2a] surrounded by marked edema in the right occipital lobe and the calcarine area. Postoperative MRI showed gross total removal of the tumor [Figure 2b].