Foliated tumor is a histopathologic description that refers to two tumors that may be joined together and foliated like leaves of a tree. Most lobular tumors are benign lesions, but some are borderline lesions. The more common ones, such as lobular tumors of the breast, may show a hard mass in the breast, and two of them may be close to each other, and the preliminary diagnosis can be made by ultrasound. If the ultrasound is graded below grade 4, most of them are in grade 2 or 3, further surgery and postoperative pathology can determine the nature. Benign lobular tumors can be removed by surgery alone, and no other treatment is needed later. Of course, there are some of them are malignant or junctional, which need to be closely observed for the possibility of recurrence or malignant change later.