Can diffusion-weighted imaging distinguish between normal and squamous cell carcinoma of the palatine tonsil?

The British Journal of Radiology
Kunwar S S BhatiaAnil T Ahuja

Abstract

The utility of diffusion-weighted imaging (DWI) in the detection of squamous cell carcinoma (SCC) of the tonsils has not been previously investigated. This preliminary study compared DWI of apparent SCC tonsillar tumours with normal tonsils. DWI of the tonsils was performed in 10 patients with newly diagnosed tonsil SCC that was evident on conventional MRI and in 17 patients undergoing cranial MRI for other indications. Regions of interest (ROI) were drawn around each identifiable tonsil on the apparent diffusion coefficient (ADC) map and the mean ADC value for each tonsil was calculated. ADC values for normal and SCC tonsils were compared using the Mann-Whitney U-test. The median ADC and range (x10(-3) mm(2) s(-1)) were found to be 0.814 and 0.548-1.312, respectively, for normal tonsils compared with 0.933 and 0.789-1.175, respectively, for SCC tonsils. ADC values were significantly higher for SCC tonsils than for normal tonsils (p = 0.009). No SCC tonsil had an ADC less than 0.82 x 10(-3) mm(2) s(-1) compared with 58% of normal tonsils. We conclude that there is a difference in the ADC between normal tonsils and SCC tonsils where the cancer is apparent on conventional MRI. These results are promising, although further studies...Continue Reading

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Citations

Jan 15, 2016·The British Journal of Radiology·Ying YuanXiaofeng Tao
Dec 30, 2014·PloS One·Hamid PahlevaninezhadPierre M Lane
Nov 7, 2016·Cancer Imaging : the Official Publication of the International Cancer Imaging Society·Mária GődényMiklós Kásler
Aug 11, 2020·Cancer Imaging : the Official Publication of the International Cancer Imaging Society·Omar FreihatÁrpád Kovács

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