Volume 27, Issue 136, June 2023

Assessment of staging in gingival cancer: The value of computed tomography

Dang Kim Phung^1,5, Nguyen The Anh^2♦, Lam Diem Phuong^1,3, Dang Vinh Hiep⁴, Nguyen Anh Huy⁵, Nguyen Tin Trung⁵, Huynh Quang Huy⁴

¹Pham Ngoc Thach University of Medicine, Ho Chi Minh city, Vietnam
²Department of Intensive Care and Poison Control, Vietnam Soviet Friendship Hospital, Ha Noi, Vietnam
³Trung Vuong hospital, Ho Chi Minh city, Vietnam
⁴Pham Ngoc Thach University of Medicine, Ho Chi Minh city, Vietnam
⁵Ho Chi Minh City Oncology Hospital, Ho Chi Minh city, Vietnam

^♦Corresponding author
Department of Intensive Care and Poison Control, Vietnam Soviet Friendship Hospital, Ha Noi, Vietnam

ABSTRACT

Purpose: To assess the values of computed tomography in T staging of gingival cancer. Methods: A retrospective cross-sectional study conducted with 102 patients who had CT-scans and pathology results of carcinoma of gingiva at Ho Chi Minh City Oncology Hospital. This study evaluated the diagnostic value of CT in assessing the stage and bone invasion of gingival cancer by comparing CT assessment and pathology assessment. Results: There were 102 cases of gingival cancer in the study sample, of which 46 cases had tumor surgically removed. CT measurements of tumor size showed a strong correlation with macroscopic measurements with a Spearman correlation coefficient of 0.77. CT showed high diagnostic value in assessing bone and retromolar trigone invasion with sensitivity of 97.6% and 88.8%, specificity of 71.4% and 91.7%, positive predictive value of 95.2% and 80.0%, negative predictive value of 83.3% and 95.7%, respectively. In comparison between CT-scans and histologic analysis in T staging, showed good agreement, with weighted kappa index of 0.6 (95% CI, 0.4–0.9). Conclusion: Computed tomography is a valuable method in T staging of gingival cancer. The CT assessment should evaluate factors according to 8^th AJCC to accurately evaluate the disease stage.

Keywords: CT, cancer, gingiva, staging, invasion, metastasis

Medical Science, 2023, 27, e275ms3112

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DOI: https://doi.org/10.54905/disssi/v27i136/e275ms3112

Published: 26 June 2023