“…15,23,24 Subsequently, it has been recommended that levels of CD be monitored as a prognostic indicator in breast cancer and used independent of classical prognostic parameters such as tumor size, histological grade, lymph node status, and steroid receptor expression. 25 -27 The significance of pCD and CD levels in other tumors such as endometrial adenocarcinoma, 28,29 colon carcinoma, 30 colorectal carcinoma, 31 oral cancer, 32 laryngeal tumors, 33,34 head and neck squamous cell carcinoma, 35 carcinoma of thyroid tissue, 36 prostate tumors 37,38 melanoma, 8,39 gastric cancer, 40 and ovarian cancer, 41,42 has also been demonstrated, suggesting that this system might be involved in the metastatic growth of numerous other cancer cell types.…”