Fig. 5From: Complete response to combination therapy using nivolumab and ipilimumab for metastatic, sarcomatoid collecting duct carcinoma presenting with high expression of programmed death-ligand 1: a case reportExpression of programmed death-ligand 1 in sarcomatoid tissue from nephrectomy specimens (original magnification ×100). Brown coloring indicates positive antibody staining (yellow arrows), and the tumor proportion score is more than 10%Back to article page