Malignant solitary fibrous tumor of the pancreas with systemic metastasis: A case report and review of the literature  

作　　者：Hao Geng Yu Ye Yun Jin Bai-Zhou Li Yuan-Quan Yu Yang-Yang Feng Jiang-Tao Li 

机构地区：[1]Department of General Surgery,The Second Affiliated Hospital,College of Medicine,Zhejiang University,Hangzhou 310009,Zhejiang Province,China [2]Department of Pathology,The Second Affiliated Hospital,College of Medicine,Zhejiang University,Hangzhou 310009,Zhejiang Province,China

出　　处：《World Journal of Clinical Cases》2020年第2期343-352,共10页世界临床病例杂志

基　　金：Supported by National Natural Science Foundation of China,No.81770614 and No.81570559;Training project of health high level talents in Zhejiang Province(2014)

摘　　要：BACKGROUND Pancreatic solitary fibrous tumor(SFT) is a rare neoplasm of intermediate biological potential. So far, only 22 cases have been reported since 1999. All the cases, except one, exhibited benign features. Here, we report the first case of malignant pancreatic SFT with typical Doege-Potter syndrome, along with the clinical and pathologic evidence of its systemic metastasis.CASE SUMMARY The patient was a 48-year-old man with a 1-year history of pancreatic and liver masses and refractory hypoglycemia. Increased uptake of the tracer fluorodeoxyglucose(FDG) was found in the liver and bones by fluorine-18 FDG positron emission tomography/computed tomography. After multidisciplinary discussion, a distal pancreatectomy procedure was performed, and histological examination showed a lesion composed of abundant heterogeneous spindle cells with localized necrosis. On immunohistochemistry evaluation, STAT6 was found to be diffusely expressed in the tumor. Based on the overall evidence, the patient was diagnosed with malignant pancreatic SFT with liver and bone metastases.CONCLUSION The diagnosis of malignant SFT requires comprehensive evidence including clinical, immunohistochemistry, and histological features. This case may be presented as a reference for diagnoses and management of malignant pancreatic SFTs with systemic metastasis.BACKGROUND Pancreatic solitary fibrous tumor(SFT) is a rare neoplasm of intermediate biological potential. So far, only 22 cases have been reported since 1999. All the cases, except one, exhibited benign features. Here, we report the first case of malignant pancreatic SFT with typical Doege-Potter syndrome, along with the clinical and pathologic evidence of its systemic metastasis.CASE SUMMARY The patient was a 48-year-old man with a 1-year history of pancreatic and liver masses and refractory hypoglycemia. Increased uptake of the tracer fluorodeoxyglucose(FDG) was found in the liver and bones by fluorine-18 FDG positron emission tomography/computed tomography. After multidisciplinary discussion, a distal pancreatectomy procedure was performed, and histological examination showed a lesion composed of abundant heterogeneous spindle cells with localized necrosis. On immunohistochemistry evaluation, STAT6 was found to be diffusely expressed in the tumor. Based on the overall evidence, the patient was diagnosed with malignant pancreatic SFT with liver and bone metastases.CONCLUSION The diagnosis of malignant SFT requires comprehensive evidence including clinical, immunohistochemistry, and histological features. This case may be presented as a reference for diagnoses and management of malignant pancreatic SFTs with systemic metastasis.

关 键 词：Solitary fibrous tumor PANCREAS MALIGNANT Doege-Potter syndrome Case report 

分 类 号：R735.9[医药卫生—肿瘤]