Fig. 4. Histological findings of the perirectal lymph node. (A) The metastatic node was located in the pericolic adipose tissue, but there was no recognizable lymph node structure. The node demonstrated a stellate shape (H&E, ×10). (B) Lymphovascular invasion was noted in the peripheral part of the metastatic node (H&E, ×100). (C) Some parts of the tumor demonstrated neural and perineural invasion (H&E, ×100).