However, our observations confirm the role of the peritoneal senescence, through the enhanced production of reactive oxygen species and of ICAM1 expression, in promoting the tumor cell adhesion [22]–[24] and suggest that the use of the peritoneal washes as a source to isolate and propagate HPMCs can be easily applied to evaluate in vitro the state of the mesothelium in cancer patients. Here, ICAM1 is linked to cancer.