This latter was reflected by tumor nodules in the mesentery of jejunum and ileum, infiltration of liver parenchyma and capsule with tumor cells (as confirmed by positive PAX-8 staining), omental metastases with tumor cells - in the connective and adipose tissue associated to the spleen and tumor cells in the mesothelium of the parietal peritoneum. The gene discussed is PAX8; the disease is neoplasm.