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Upper tract urothelial carcinoma (UTUC) accounts for 5% to 10% of all urothelial carcinomas. Despite many shared features, key clinical and molecular genetic differences between upper tract and bladder urothelial carcinomas are becoming apparent. We have previously demonstrated alterations of mammalian target of rapamycin (mTOR) pathway in bladder carcinoma with a potential impact on biological behavior...
The penile urethra has a distinctive morphology not yet fully characterized by immunohistochemistry. In addition, both urothelial and squamous cell carcinomas have been reported in the penile urethra, and the distinction between these 2 tumors might be difficult. The purposes of this study are to assess the histology and immunohistochemical profile (CK20, CK7, p63, and GATA3) of the penile urethra...
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