[Retracted] BID-Net: An Automated System for Bone Invasion Detection Occurring at Stage T4 in Oral Squamous Carcinoma Using Deep Learning

Table 1

edition of T stage classification given by AJCC for oral cancer [4].

P	Primary tumor of the oral cavity
Tx	Primary tumor cannot be accessed.
Tis	Carcinoma in situ
T1	Primary tumor has a maximal diameter of 2 cm
T2	Primary tumor has a maximal diameter of more than 2 cm but no more 4 cm
T3	Primary tumor has a maximal diameter of more than 4 cm.
T4a (oral cavity)	Tumor invades through cortical bone, into deep/extrinsic muscle of tongue, maxillary sinus, or skin of face
T4b	Tumor invades masticator space, pterygoid plates, or skull base; or encases internal carotid artery