Fig. 1

A. Morphological characteristics of prostate cancer involving the rectal wall. a. Foamy glands (black arrow heads). b. Small glands (black arrow heads). c. Diffuse individual cell infiltration (black arrow heads). d. Small prostate cancer cells infiltrating the muscularis propria (black arrow heads). e Cribriform structure (black arrow heads). f. Emboli in the lymph-vessels of the mucosal layer (black arrow heads). g. Lymph tissue metastasis (black arrow heads). h. Glomeruloid structures (black arrow heads). i. Perineural capsular invasion (black arrow heads). All images are hematoxylin and eosin (H&E) sections with a magnification of × 200