CT imaging findings,differential diagnosis of atypical solid pseudopapillary tumor of pancreas and pathology correlation
YAO Feng-qing
Abstract：Objective To evaluate the imaging CT findings of atypical solid pseudopapillary tumor of pancre -as and pathology correlation,and to analyze the differential diagnosis of it .Methods Seventy-seven cases of solid pseudopapillary tumor of pancreas all received surgery , and were proved by pathology and immunohistochemistry . Preoperative diagnosis included solid pseudopapillary tumor of pancreas (47 cases), pancreatic cyst (7 cases), pseudocyst(4 cases), pancreatic abscess(5 cases), pancreatic serous cystadenoma (7 cases), pancreatic cancer (5 cases) and pancreatic hematoma(2 cases).The clinical materials of all the 77 cases were retrospectively analyzed and the CT imaging and pathology features of atypical solid pseudopapillary tumor of pancreas were investigated .Results The patients included 29 males and 48 females with mean age of 41.5 years(range 2~79 years).Eighteen cases complained abdominal masses,12 abdominal distention and 47 asymptomatic.CT imaging examination demonstrated occupying lesions in the and around pancreas , 44 lesions were solid cystic masses, 16 single cystic masses, 10 solid masses and 7 polycystic masses(less than 3).Among all the 77 cases, 29 lesions located at pancreatic head , 25 at pancreatic body, 17 at pancreatic tail and 6 lesions were difficult of locating.With or without complete capsule , the common bile duct and pancreatic duct didn′t expand.Pathologically, the tumor were composed of solid and pseudo-papillary structures, and cystic parts were liquefaction, necrosis and dated hemorrhage .Conclusion It isn′t difficult of diagnosing solid pseudopapillary tumor of pancreas with typically big solid cystic mass , but when solid pseudopapil-lary tumor of pancreas with single cystic, polycystic or completely solid masses were diagnosed ,they should be differ-entiated from other pancreatic diseases with similar features , especially with pancreatic cancer in older patients .The CT imaging findings and pathology of solid pseudopapillary tumor of pancreas have certain characteristics ,which are helpful in the diagnosis.
Keywords：Atypical solid pseudopapillary tumor of pancreas (SPTP)PathologyDifferential diagnosis
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 865-869 )