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Vieira FL, Vieira BJ, Guimaraes MA, et al. Cellular profile of the peritumoral inflammatory infiltrate in squamous cells carcinoma of oral mucosa: Correlation with the expression of Ki67 and histologic grading. BMC Oral Health. 2008;8:25doi: 10.1186/1472-6831-8-25.
Vieira, F. L., Vieira, B. J., Guimaraes, M. A., & Aarestrup, F. M. (2008). Cellular profile of the peritumoral inflammatory infiltrate in squamous cells carcinoma of oral mucosa: Correlation with the expression of Ki67 and histologic grading. BMC oral health, 825. https://doi.org/10.1186/1472-6831-8-25
Vieira, Fabricio L D, et al. "Cellular profile of the peritumoral inflammatory infiltrate in squamous cells carcinoma of oral mucosa: Correlation with the expression of Ki67 and histologic grading." BMC oral health vol. 8 (2008): 25. doi: https://doi.org/10.1186/1472-6831-8-25
Vieira FL, Vieira BJ, Guimaraes MA, Aarestrup FM. Cellular profile of the peritumoral inflammatory infiltrate in squamous cells carcinoma of oral mucosa: Correlation with the expression of Ki67 and histologic grading. BMC Oral Health. 2008 Sep 02;8:25. doi: 10.1186/1472-6831-8-25. PMID: 18764952; PMCID: PMC2556313.
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BMC Oral Health. 2008 Sep 02;8:25. doi: 10.1186/1472-6831-8-25.

Cellular profile of the peritumoral inflammatory infiltrate in squamous cells carcinoma of oral mucosa: Correlation with the expression of Ki67 and histologic grading.

BMC oral health

Fabricio L D Vieira, Beatriz J Vieira, Marco A M Guimaraes, Fernando M Aarestrup

Affiliations

  1. UERJ, Rio de Janeiro, RJ Brazil. [email protected]

PMID: 18764952 PMCID: PMC2556313 DOI: 10.1186/1472-6831-8-25

Abstract

BACKGROUND: Squamous cells carcinoma is the most important malignant tumor with primary site in the oral cavity and, given the great exposure of mucosa and lips to the etiologic factors of this neoplasm, its incidence is high. Investigation of the prognostic determinants is significant for the expectations of treatment proposal and cure of the patient. The local immune response represented by peritumoral inflammatory infiltrate is a possible prognostic factor.

METHODS: In this study, oral mucosa samples of squamous cells carcinoma were analyzed, separated according to their histological classification as well as the phenotypical profile of the cells comprising the peritumoral inflammatory infiltrate was investigated by immunohistochemical method, in addiction, the cell proliferation index via protein Ki67 expression was determinated.

RESULTS: The T lymphocytes made up most of this inflammatory infiltrate, and among these cells, there was a predominance of T CD8 lymphocytes relative to the T CD4 lymphocytes. The B lymhocytes were the second most visualized leucocyte cell type followed by macrophages and neutrophils. The immunohistochemical assessment of Ki-67 positive cells revealed a greater expression of this protein in samples of undifferentiated squamous cells carcinoma.

CONCLUSION: The results suggest that the cellular immune response is the main defense mechanism in squamous cells carcinoma of oral mucosa, expressed by the large number of T lymphocytes and macrophages, and that the greatest intensity of local response may be associated with the best prognosis.

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