The frequency of TP53 mutations was 7.7% (4/52) in tumours sized ≤1 cm, 20.0% (5/25) in tumours sized >1 to ≤ 2 cm, 54.5% (6/11) in tumours sized >2 to ≤ 3 cm, and 80.0% (4/5) in tumours sized >3 cm. Here, TP53 is linked to neoplasm.