0.8 centimeters, about the size of a green pea and about the size of a normal soybean. The size of a mass or lump is usually defined medically by measuring the length and width of the mass or lump, such as describing the size of endometrial polyps, cervical polyps, ovarian cysts, ovarian tumors, and a number of other masses in the pelvis. Developmental malformations of certain fetal structures, such as cleft lip, cleft palate, widened lateral ventricles, hydrocephalus, etc., are described purely in terms of width. The size of clinical lesions in medicine cannot be determined by measuring a numerical value alone, but needs to be combined with specific clinical symptoms and signs to determine the severity of the disease, and whether treatment is needed requires a professional clinician to combine the condition with individual circumstances to make a comprehensive determination. If you have any other questions, we recommend consulting a professional doctor for guidance.