Just based on the H&E sections, metastatic or primary malignancy cannot be ruled out. However, some benign tumors should also be considered, such as adenomatoid tumor, especially given relatively bland cytologic appearance. Stains for mesothelial markers, such as calretinin, will be helpful.
Just based on the H&E sections, metastatic or primary malignancy cannot be ruled out. However, some benign tumors should also be considered, such as adenomatoid tumor, especially given relatively bland cytologic appearance. Stains for mesothelial markers, such as calretinin, will be helpful.