Nodules usually look like smaller masses, which may be round, round-like or irregular in shape, and require prompt medical attention once they are detected. Clinically, human tissue growths are named according to their size, with larger lumps being called masses and smaller ones being called nodules. Nodules can occur in many tissues and organs of the human body, such as thyroid nodules, breast nodules, lung nodules, liver nodules, etc., and their appearance is varied, and they can be round, round-like, or irregular in shape. Of course, there are benign and malignant nodules, benign nodules include fibromas, lipomas and hemangiomas, etc., while malignant nodules usually refer to malignant tumors, such as breast, lung, and liver cancers, etc. When nodules appear, it is necessary to take positive actions. When nodules appear, you need to actively consult the doctor to clarify the nature of the nodules and then carry out targeted treatment.