Successful treatment of pancreatic accessory splenic hamartoma by laparoscopic spleen-preserving distal pancreatectomy: A case report

Figure 4 Microscopic examination. A: The mass grew from the pancreas [hematoxylin and eosin (HE), × 40]; B: The mass contained unorganized small slit-like vascular channels enclosing red blood cells and lined with plump endothelial cells. No area of cytologic atypia was identified. Focal lymphoid aggregates were found in the intravascular areas (HE, × 200). White pulp or fibrosis was not observed.