Enlarged and bulging moles do not necessarily mean cancer. Usually, when a mole becomes large or bulging, it may be a mild local inflammatory reaction or an enlargement due to mechanical stimulation, or it may be a local nest of nevus cells with some hyperplasia, but it does not necessarily mean that it is cancerous. However, in this case, it generally indicates that the pigmented nevus in that area may have a certain tendency of malignant transformation. Therefore, in general, when such a state occurs, patients are advised to have the pigmented nevus removed and sent to pathology, so as to minimize the probability of malignant disease, but it does not necessarily mean that it is malignant. However, it does not necessarily mean that the nevus is malignant. In actual clinical practice, many cases like this are benign after being cut down and sent to pathology. Although some may be malignant melanoma, but the probability is very low.