{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T06:04:38Z","timestamp":1789538678779,"version":"build-2803163510"},"reference-count":17,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T00:00:00Z","timestamp":1789516800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Pediatr."],"abstract":"<jats:p>Solid pseudopapillary neoplasm (SPN) of the pancreas is a rare pancreatic tumor with low-grade malignant potential. It predominantly occurs in adolescent girls and young women but can also affect boys. SPN may contain hemorrhagic or cystic components that can be mistaken for a post-traumatic hematoma when patients present after abdominal injury. We report a 12-year-old boy whose pancreatic tail lesion was initially interpreted as a traumatic retroperitoneal hematoma after minor blunt trauma at age 7. Ultrasound-guided drainage yielded hemorrhagic fluid with non-elevated amylase levels and negative bacterial culture; however, cytological examination was not documented. The lesion persisted, and scheduled follow-up was subsequently discontinued. Approximately 4.5 years later, repeat evaluation demonstrated interval enlargement from approximately 5.6\u2005cm to 10\u2005cm. Imaging showed a complete thin capsule, mixed solid-cystic architecture, coarse calcification, and progressive enhancement, features that were not compatible with a resolving hematoma. After multidisciplinary reassessment, SPN was considered the most likely diagnosis. Laparoscopic spleen-preserving distal pancreatectomy was successfully performed, with an estimated blood loss of 30\u2005mL. Histopathological examination confirmed SPN, with a Ki-67 index of approximately 2%, a negative stapled margin, and no tumor involvement in the sampled adjacent pancreatic or fibrofatty tissue. The patient did not develop a clinically relevant postoperative pancreatic fistula. During approximately 11 months of postoperative surveillance, no recurrence was detected. This case emphasizes that a presumed post-traumatic hematoma should be reassessed when it persists or enlarges. It also supports the feasibility of minimally invasive spleen-preserving resection in carefully selected pediatric patients.<\/jats:p>","DOI":"10.3389\/fped.2026.1899711","type":"journal-article","created":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T05:30:57Z","timestamp":1789536657000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Case Report: Delayed diagnosis of pancreatic solid pseudopapillary neoplasm in a boy initially misdiagnosed as traumatic retroperitoneal hematoma"],"prefix":"10.3389","volume":"14","author":[{"given":"Zhaowei","family":"Zhou","sequence":"first","affiliation":[{"name":"Department of Pediatric Surgery, Yulin First People's Hospital","place":["Yulin, Guangxi, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rifang","family":"Pan","sequence":"additional","affiliation":[{"name":"Department of Pediatric Surgery, Yulin First People's Hospital","place":["Yulin, Guangxi, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junzhong","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Pediatric Surgery, Yulin First People's Hospital","place":["Yulin, Guangxi, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhaopan","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Pediatric Surgery, Yulin First People's Hospital","place":["Yulin, Guangxi, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhihua","family":"Xiao","sequence":"additional","affiliation":[{"name":"Department of Pediatric Surgery, Yulin First People's Hospital","place":["Yulin, Guangxi, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,9,16]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"318","DOI":"10.1007\/s10238-025-01733-9","article-title":"Management and outcomes of solid 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