Yoon BC, Buch K, Cunnane ME, et al. - Researchers conducted the study for comparing the accuracy of oral tongue squamous cell carcinoma (OTSCC) tumor thickness (TT) measured on CT to intraoperative ultrasound (US) and histopathology. Twenty-six patients with OTSCC who had tumor resection by a single surgeon with simultaneous intraoperative US between March 2016 and April 2019 were identified and their data were reviewed prospectively. Preoperative CT is unreliable for assessing TT in OTSCC when compared to US and histopathology, especially for OTSCC less than 10 mm. US provides a practical complementary imaging tool with a unique role for primary tumor assessment that can aid in preoperative planning, particularly for small tumors.