[Relationship among lymphatic metastasis, pericancerous lymphocytic reaction and dendritic cell infiltration in laryngeal carcinoma cells].
OBJECTIVE
To study the role and the clinical significance of dendritic cell infiltration against tumor cells in patients with laryngeal squamous cell carcinoma.


METHODS
Immunohistochemical method using S-100 protein antibody was employed to detect dendritic cells (DC) on paraffin-embedded tissue sections from 23 patients with laryngeal squamous cell carcinomas. The relationships among the density of dendritic cell infiltration in laryngeal carcinomas and cervical lymphatic metastasis, pericancerous lymphocytic reaction and other clinicopathologic parameters were observed.


RESULTS
The numbers of dendritic cells infiltrating among laryngeal carcinoma cells in patients with no cervical lymph metastasis was significantly larger than those with cervical lymphatic metastasis (t = 4.889, P < 0.01). Significant increase DC infiltration among laryngeal carcinoma cells was found in the group with intensively positive reaction of pericancerous lymphocyte than in the medium and weakly positive groups. The number of infiltrating dendritic cells in patients who had survived more than 5 years was significantly larger than those survived less than 5 years (t = 4.423, P < 0.01). The numbers of the infiltrating dendritic cells in patients with well-differentiated squamous cell carcinoma and poorly differentiated squamous cells carcinoma were 2.2 +/- 1.07 and 14.6 +/- 7.14 respectively, which were significantly different (q = 4.532, P < 0.05).


CONCLUSIONS
The study showed that DC infiltration among laryngeal squamous carcinoma cells played an important role in the host immune reaction against tumor. It indicated that when the density of infiltrating DC is higher, the patients had less chance of cervical lymph metastasis and may have a longer survival time. There was a coordinative effect between DC infiltration in tumor cells and pericancerous lymphocyte reaction. Thus, the DC infiltration among laryngeal squamous cells could be used as an index of prognosis.
Feng
Y
Y
Department of Otorhinolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China.
Zhang
B
B
Tan
H
H
Su
H
H
He
W
W
D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000276:immunology / Q000556:secondary*; D003713:Dendritic Cells / Q000276:immunology* / Q000473:pathology; D005260:Female; D006801:Humans; D007822:Laryngeal Neoplasms / Q000276:immunology / Q000473:pathology*; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis; D008214:Lymphocytes / Q000276:immunology* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009333:Neck; D009361:Neoplasm Invasiveness; D011379:Prognosis