3cm pancreatic cystadenoma, with large volume, there is the risk of compression of surrounding tissues and organs and cancer, it is a relatively serious disease, and it is more terrible. 3cm pancreatic cystadenoma, the volume is relatively large, may produce pressure on the surrounding tissues and organs, appear local symptoms, if the pancreatic islet cells are compressed, the patient may appear insulin secretion is insufficient, hyperglycemia phenomenon, and secondly, for the patients with 3cm diameter pancreatic cystadenoma, it has the risk of inducing carcinoma, which is a relatively more serious disease, and it is relatively scary. Pancreatic cystadenoma is usually a benign tumor, small volume of pancreatic cystadenoma, and there is no obvious clinical symptoms, can be observed and treated, regular review of abdominal ultrasound or CT, to understand the volume of cystadenomas or malignant changes and other conditions; if the volume of larger cystadenoma patients, whether or not there are clinical symptoms, there is a certain risk, it is recommended that surgical resection of pancreatic cystadenoma and other treatments. If the patient has any discomfort, it is recommended to go to the hospital in time and avoid carelessness so as not to delay the treatment.