Solid-seudopapillarytumorofpancreas (SPT) is a rare, low-grade malignant pancreatic tumor of unknown histologic origin. In terms of clinical presentation and histopathology, SPT has characteristics that are different from other pancreatic tumors.SPT was first described by Frantz and is therefore also known as Frantz tumor. The incidence of SPT is low, accounting for less than 1% of all pancreatic tumors. In recent years, as the understanding of SPT has improved, the number of cases found has gradually increased. The origin of SPT tissue is still unclear, and some scholars speculate that SPT does not originate from pancreatic tissue, but possibly from cells associated with the ovarian primordium of the germinal ridge connected to the pancreatic primordium during embryogenesis, so it is more common in female patients. histopathological manifestations of SPT differ from other pancreatic tumors, with smaller tumors being solid and larger tumors often having specific pseudopapillary structures. pathological diagnosis of SPT The diagnosis of SPT pathology mainly relies on the typical light microscopic presentation and is generally not difficult. Usually, pancreatic alveolar differentiation markers and ductal epithelial differentiation markers are often negative, and chromogranin immunostaining is mostly negative. Based on these features, it can be differentiated from pancreatic endocrine tumors and alveolar cell carcinoma. Although some patients present with symptoms, these symptoms are mild and nonspecific, so the diagnosis is often delayed, and the tumor volume is often more than 10 cm at the time of consultation. it is difficult to distinguish SPT from other cystic solid tumors in terms of CT presentation, but even if the tumor is large, it rarely shows dilated pancreatic duct and bile duct obstruction or vascular invasion, and the surrounding tumor tissue is mostly pushed and displaced. ultrasound, CT or endoscopic ultrasound guidance Tumor puncture biopsy is gradually becoming an effective preoperative diagnostic method. Although the incidence of SPT is not high, due to its relatively good prognosis, surgery should not be abandoned in clinical work because the tumor is huge or has encircled blood vessels. At the same time, in medical units with conditions, for patients with clinically suspected solid pseudopapillary tumors of the pancreas, B-ultrasound or CT-guided fine-needle aspiration is feasible to obtain preoperative pathological diagnosis in order to avoid the incidence of postoperative complications due to excessive surgical resection. Tumor specimens are generally grayish red or grayish brown in color. Tumors >6 cm in diameter are cystic solid masses containing coffee-colored fluid with rough inner walls; tumors <6 cm in diameter are solid in section with some parenchymal bad and brittle, with yellow or red hemorrhagic necrotic areas. Currently, the only effective treatment for SPTP is surgical resection. The choice of specific surgical procedure depends on the growth site of the tumor, the size of the tumor, the number of operations and the intraoperative judgment of the benignity and malignancy of the tumor. If the tumor is located in the head of the pancreas, pancreaticoduodenectomy with preservation of the pylorus or pancreatic head with preservation of the duodenum can be considered; if the tumor is located in the body or tail of the pancreas, distal pancreatectomy and splenectomy can be performed, and if the splenic hilum is not involved, preservation of the spleen can be considered; if the tumor is small, with intact envelope and exophytic growth, local resection of the tumor can be considered, but attention should be paid to If the tumor is small, with intact envelope and exophytic growth, local resection of the tumor can be considered, but attention should be paid to complete resection of the base and repair and drainage of the pancreatic trauma. If the tumor invades the portal vein or the superior mesenteric vessels or invades the surrounding tissues, even if there are local metastases in the liver, enlarged resection of the tumor can be performed. Because most of the tumors have intact envelope and do not invade large blood vessels and organs, local resection can achieve good therapeutic effect. Studies have shown that the malignant biological behavior of SPTP is not obvious, and the prognosis of local expansion surgery is good, unless the tumor is located in the head of the pancreas, and Whipple surgery is generally not necessary. Local infiltration, metastasis and recurrence of the tumor are not contraindications to surgery. Patients who develop liver metastasis, retroperitoneal metastasis and those who develop recurrence and metastasis after surgery should be treated with aggressive surgery.