Fig. 2
From: Renal and retroperitoneal metastasis from prostate adenocarcinoma: a case report
Histopathologic examination of renal and prostate biopsy. a Microscopic image revealed both renal metastases (arrow) and extra-capsular (asterisk) cancer tissue. b Microscopic appearance of retroperitoneal cancer with renal capsule (arrow) involvement. (H&E stain, ×100). b Retroperitoneal cancer with muscle (arrow) invasion. (H&E stain, ×100). c Prostate biopsy tissue (H&E stain, ×400)