“…Systemic symptoms, for instance, generalized weakness, weight loss, abdominal pain, anemia, and fever were complained by selected patients (Howard et al, 2007; Shibuya et al, 2000). Twenty‐four cases had cervical lymph node metastasis upon treatment (Bavle et al, 2016; Jayaram & Elsayed, 2005; Kato et al, 2010; Munakata et al, 1998; Ohba et al, 2015; Ramesh et al, 2019; Reyes et al, 2015; Shigeta et al, 2015; Stojadinovic et al, 2002; Su et al, 2006; Wen‐cheng et al, 2005). Thirteen patients had a prior history of cancer, and 8 patients had prior oral SCC (Gorsky & Epstein, 1998; Kato et al, 2010; Okuyama et al, 2017; Xie et al, 2017).…”