RT Journal Article SR Electronic T1 Metachronous metastatic pancreatoblastoma to the liver in an elderly patient misdiagnosed as pancreatic acinar cell carcinoma JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e252910 DO 10.1136/bcr-2022-252910 VO 15 IS 12 A1 Nina L Eng A1 Kriti Tiwari A1 Guoli Chen A1 June S Peng YR 2022 UL http://casereports.bmj.com/content/15/12/e252910.abstract AB A woman in her 80s was evaluated for a liver mass. She had a history of what was reported as pancreatic acinar cell carcinoma resected with a pancreatoduodenectomy 10 years prior at another institution. Liver biopsy showed metastatic pancreatoblastoma (PB) and staging imaging showed no evidence of additional metastatic disease. She underwent laparoscopic non-anatomic partial hepatectomy and recovered uneventfully. The liver pathology was reviewed along with slides from her initial pancreatoduodenectomy, and both were noted to be consistent with PB. PB contains similar histological characteristics to pancreatic acinar cell carcinoma. Distinguishing between the two diagnoses is critical for accurately defining the prevalence, clinical course and prognosis associated with PB.