Evidence for lymphangiogenesis and its prognostic implications in head and neck squamous cell carcinoma
Φόρτωση...
Ημερομηνία
Συγγραφείς
Kyzas, P. A.
Geleff, S.
Batistatou, A.
Agnantis, N. J.
Stefanou, D.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
J Pathol
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Lymph node metastasis is a frequent reason for adverse clinical outcome in many epithelial neoplasms, including head and neck squamous cell carcinoma. The mechanisms underlying the capability of epithelial neoplasms to metastasize via lymphatic vessels have not yet been fully elucidated. There is great debate about whether cancer cells can metastasize by expansion and invasion of pre-existing peritumoral lymphatics or by the formation and invasion of new lymphatics within tumours (lymphangiogenesis). In order to investigate this issue, we examined 81 tissue specimens from patients with head and neck squamous cell carcinoma, using immunostaining for the specific lymphatic endothelium marker podoplanin, and assessed intratumoral and peritumoral lymphatic density. We also quantified lymphatic invasion and examined the possible associations of all the above parameters with clinicopathological features and outcome. Finally, we used double staining with podoplanin and the cell proliferation marker Ki-67 in order to evaluate lymphangiogenesis. High intratumoral and peritumoral lymphatic density were both significantly associated with the presence of lymph node metastasis at the time of diagnosis (chi2 test, p < 0.001 and p = 0.007, respectively) and there was a significant correlation between high intratumoral lymphatic density and lymphatic invasion. Patients with higher intratumoral lymphatic density exhibited shorter overall survival (log rank p < 0.001) and this correlation remained significant after multivariate analysis (Cox p = 0.04), indicating that intratumoral lymphatic density is an independent prognostic factor for mortality. Peritumoral lymphatic density had no influence on outcome. Double staining revealed the existence of proliferating intratumoral lymphatics, in which tumour emboli were occasionally observed. These results indicate that lymphangiogenesis indeed occurs in head and neck squamous cell carcinoma; that newly formed vessels are targets of invasion by cancer cells; and that intratumoral lymphatic density might be used as a criterion to separate patients at higher risk of an adverse clinical outcome.
Περιγραφή
Λέξεις-κλειδιά
Adult, Aged, Aged, 80 and over, Antigens, CD34/metabolism, Carcinoma, Squamous Cell/metabolism/pathology/*physiopathology, Cell Proliferation, Female, Head and Neck Neoplasms/metabolism/pathology/*physiopathology, Humans, Immunoenzyme Techniques, Ki-67 Antigen/metabolism, *Lymphangiogenesis, Lymphatic Vessels/metabolism/pathology, Male, Membrane Glycoproteins/metabolism, Middle Aged, Neoplasm Invasiveness, Prognosis, Survival Analysis
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/15846845
http://onlinelibrary.wiley.com/store/10.1002/path.1776/asset/1776_ftp.pdf?v=1&t=h0j50hwj&s=fca9eace95b1c4e2ebad876cfcfd780bdf00160b
http://onlinelibrary.wiley.com/store/10.1002/path.1776/asset/1776_ftp.pdf?v=1&t=h0j50hwj&s=fca9eace95b1c4e2ebad876cfcfd780bdf00160b
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής