article_metadata: Moto Hasegawa Go Hasegawa Yohei Ikeda Noboru Hara Tsutomu Nishiyama
article_metadata: 10.1177/2050313X20932694
article_metadata: SAGE Open Med Case Rep
article_metadata: 2020 Jun 13;8:2050313X20932694.
article_metadata: invasive bladder cancer differentiated urothelial cancer before treatment pembrolizumab programmed death-ligand 1 expressions in tumor tissue undifferentiated urothelial cancer after pembrolizumab treatment
article_metadata: CC BY-NC
article_metadata: https://pubmed.ncbi.nlm.nih.gov/32587697/
article_metadata: Case Reports
article_metadata: PMC7294485
article_metadata: 32587697
article_metadata: Emergence of undifferentiated urothelial carcinoma after pembrolizumab treatment for patient with invasive urothelial bladder cancer: A case report
article_metadata: 2020