Tumor sections are grayish-yellowish soft not necessarily malignant. The distinction between benign and malignant tumors should be diagnosed by pathological cytology and immunohistochemical staining. Tumor cut surface is grayish-yellow and soft is not necessarily malignant tumor. For example, the cut surface of lipoma is grayish-yellow and soft, but lipoma is a kind of benign tumor. To determine whether a tumor is benign or malignant should not be judged by the color pattern of the tumor section, but should be determined by pathological cytology and immunohistochemical staining of the tumor tissue. Pathological cytology examination requires microscopic observation of the differentiation degree of the tumor tissue, the heterogeneity of the tumor cells, and the nuclear division image of the tumor cells in order to determine the benign or malignant nature of the tumor cells, and immunohistochemical staining is also helpful in determining the benign or malignant nature of the tumor cells. In addition, the growth rate of the tumor tissue, whether it is metastatic or not, and whether it has clear boundaries with the surrounding tissues can also be observed to determine whether the tumor tissue is benign or malignant. If the tumor section is grayish-yellow and soft, do not blindly judge whether the tumor is benign or malignant on your own, but consult your physician.