Zhou, a 14-year-old female, 214085, with a huge tumor in the head of the pancreas, underwent a one-stage pancreatic head and duodenectomy + pancreaticogastrojejunostomy, which went well. Postoperative pathology confirmed: solid pseudopapillary tumor with negative margins. Tumor 7*5.5*4cm, one side attached to the intestinal canal, intestinal canal length 12cm, diameter 15mm, intestinal mucosa intact, section and pancreatic tissue and mass, mass grayish-white 5*4.5cm, visible bleeding. Gallbladder tissue, mucosa partially degenerated. Lymph node reactive hyperplasia. Preoperative abdominal enhancement CT: pancreatic head area see clumped abnormal density shadow, the boundary is still clear, the size of about 5.30*3.59*6.13cm, sweeping to isointense, CT value of about 38HU, within the speckled calcified density shadow, enhancement can be seen mildly strengthened, delayed can be seen to strengthen the degree of increase; lesions adjacent to the superior mesenteric vein right right renal vein in front of the superior mesenteric vein pushed to the left anteriorly The superior mesenteric vein was pushed to the left anteriorly. The morphology and density of the pancreatic body and pancreatic tail did not show any obvious abnormality.