Figure 4


SWI/SNF complex-deficient undifferentiated carcinomas. Pancreatic rhabdoid carcinoma metastatic to the liver (a) with SMARCB1 loss (inset) and diffuse membranous expression of claudin-4 (b). A rhabdoid carcinoma of the cecum (c) with SMARCA4 loss (inset) and multifocal expression of claudin-4 (d). A SMARCB1-deficient sinonasal carcinoma (e) with diffuse positivity for claudin-4 (f).