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However, mobile tongue SCCs involve several subtypes that have distinct pathological features and biological behaviors. Some subtypes are relatively rare, and the pathological subtype influences treatment decision-making. Therefore, the recognition of SCC subtypes is crucial for proper treatment. In this review, we summarize nine SCC subtypes, including conventional SCC and highlight their pathological characteristics. We also report some morphological factors, such as the pattern of invasion, budding, desmoplastic reaction, lymphovascular invasion, and perineural invasion, which could be predictive of prognosis. As some morphological factors are closely associated with prognosis, pathologists may need to evaluate additional factors in pathological reports of near features. In summary, we highlight the basic knowledge of mobile tongue SCC with an emphasis on pathological subtypes, morphological features, and their relationship. 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