Clinical Insights Into Pediatric Solid Pseudopapillary Neoplasms of the Pancreas

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BACKGROUND: Solid pseudopapillary neoplasms (SPNs) of the pancreas are rare tumors with low malignant potential that usually occur in young girls and women. This study investigated the treatment experiences and outcomes after surgery for pediatric SPNs in our institutions as pediatric case series of solid SPNs are few, and long-term follow-up is also limited. METHODS: We retrospectively reviewed the outcomes of nine patients diagnosed with SPNs who underwent surgery in our three hospitals (The Jikei University Hospital, The Jikei University Kashiwa Hospital, and Kawaguchi Municipal Medical Center) between 2001 and 2023. RESULTS: All nine patients who underwent surgery were girls. Their ages ranged from 8 to 15 years (median: 10 years). The location of the tumor was at the pancreatic head, body, and tail in five, one, and three patients, respectively. Enucleation, pancreaticoduodenectomy, and laparoscopic distal pancreatectomy (LDP) were performed in four, two, and three patients, respectively. Regarding postoperative complications, a pancreatic fistula was detected in six patients, with three and three patients having grades A and B fistulas, respectively; two patients required percutaneous drainage, and one patient required endoscopic ultrasonography (EUS)-guided transgastric drainage. The follow-up period ranged from six to 261 months (median: 97 months). At the final follow-up, all nine patients were alive without recurrence. CONCLUSION: SPNs of the pancreas are incidentally diagnosed by diagnostic workups following trauma in children more frequently compared to adults. Additionally, the tumor resection by minimally invasive approaches, such as enucleation, or laparoscopic procedures results in a good prognosis in some cases.

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