BACKGROUND Primary extra-pancreatic pancreatic-type acinar cell carcinoma(ACC)is a rare malignancy,and has only been reported in the gastrointestinal tract,liver,and lymph nodes until now.Extra-pancreatic pancreatic-t...BACKGROUND Primary extra-pancreatic pancreatic-type acinar cell carcinoma(ACC)is a rare malignancy,and has only been reported in the gastrointestinal tract,liver,and lymph nodes until now.Extra-pancreatic pancreatic-type ACC in the perinephric space has not been reported.Herein,we report the first case of ACC in the perinephric space and describe its clinical and imaging features,which should be considered when differentiating perinephric space neoplasms.CASE SUMMARY A 48-year-old man with a 5-year history of hypertension was incidentally found to have an asymptomatic right retroperitoneal mass during a routine health check-up.Laboratory tests were normal.Abdominal computed tomography and magnetic resonance imaging showed an oval hypervascular mass with a central scar and enhanced capsule in the right perinephric space.After surgical resection of the neoplasm,the diagnosis was primary extra-pancreatic pancreatic-type ACC.The patient was alive without recurrence or metastasis during a 15-mo follow-up.CONCLUSION This is the first report of an extra-pancreatic ACC in right perinephric space,which should be considered as a possible diagnosis in perinephric tumors.展开更多
基金Supported by Beijing Natural Science Foundation,No.Z200015Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support,No.ZYLX201803+1 种基金‘Beijing Hospitals Authority’Ascent Plan,No.DFL201911032019SKY Imaging Research Fund of the Chinese International Medical Foundation,No.Z-2014-07-1912.
文摘BACKGROUND Primary extra-pancreatic pancreatic-type acinar cell carcinoma(ACC)is a rare malignancy,and has only been reported in the gastrointestinal tract,liver,and lymph nodes until now.Extra-pancreatic pancreatic-type ACC in the perinephric space has not been reported.Herein,we report the first case of ACC in the perinephric space and describe its clinical and imaging features,which should be considered when differentiating perinephric space neoplasms.CASE SUMMARY A 48-year-old man with a 5-year history of hypertension was incidentally found to have an asymptomatic right retroperitoneal mass during a routine health check-up.Laboratory tests were normal.Abdominal computed tomography and magnetic resonance imaging showed an oval hypervascular mass with a central scar and enhanced capsule in the right perinephric space.After surgical resection of the neoplasm,the diagnosis was primary extra-pancreatic pancreatic-type ACC.The patient was alive without recurrence or metastasis during a 15-mo follow-up.CONCLUSION This is the first report of an extra-pancreatic ACC in right perinephric space,which should be considered as a possible diagnosis in perinephric tumors.
