Fig. 4
From: Iris metastasis as the initial presentation of upper gastrointestinal tract carcinoma: a case report
High-power view showing nests of signet ring tumor cells surrounded by delicate fibrovascular septae. The tumor cells have abundant intracellular mucin and peripherally located hyperchromatic nuclei (Hematoxylin and eosin (H&E) stain; original magnification, × 400). Note: Histopathological samples are available from Prof. Dr. Muhammad Mubarak at Sindh Institute of Urology and Transplantation