Radiologic- Pathologic Correlation of Depth of Invasion in Tongue Carcinoma

Abstract

Introduction: th In tongue carcinoma according to AJCC 8 guidelines depth of invasion is included in staging, therefore there is need of imaging which can accurately assess the pretreatment stage of tumor. The objective of this study was to correlate the depth of invasion reporting by MRI and postoperative HPR. Methods: In MRI DOI was measured by drawing perpendicular lines from the reference line to the point of maximal tumor projection in the tongue medially, histologically DOI was measured from the level of the basement membrane of the closest adjacent normal mucosa. Results: Paired t test was done on the DOI of MRI and HPR. The two tailed P value is less than 0.0001. This difference is considered to be extremely statistically signicant. The mean of group one (DOI-MRI) minus Group 2 (DOI-HPR) equals 6.860. 95% condence interval of this difference is from 5.200 to 8.520. Conclusion: In our study we nd there is statiscally signicant difference between DOI reports in MRI and postoperative HPR.