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| Pancreatic schwannoma: Imaging features and pathological findings |
| Han Wang a , Bing-Bing Zhang b , Shen-Fan Wang c , Jing-Jiao Zhong d , Jian-Ming Zheng b , Huan Han b , ∗ |
a Department of Pathology, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China
b Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
c Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
d Department of Imaging, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
∗ Corresponding author.
E-mail address: hhuan1992@163.com (H. Han). |
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Abstract Schwannoma is an infrequent tumor originating from Schwann cells of the peripheral nerve sheath and was first reported as a true neoplasm originating from Schwann cells in 1910 [1] . The majority of schwannomas are detected as a solitary tumor from the peripheral nerves of the face, neck, trunk, extremities, or retroperitoneal region. Based on a previous study [2] , merely 3% of schwannomas are retroperitoneal, accounting for approximately 4% of all retroperitoneal tumors. Furthermore, pancreatic schwannomas that stem from either parasympathetic or sympathetic fibers of the pancreas are especially rare. Schwannomas are generally encapsulated, and over 90% are benign [3] . Considering its benign biological behavior, it is essential to accurately diagnose schwannomas in order to apply reasonable surgical methods and postoperative surveillance. Herein, we report four cases of pancreatic schwannoma in our center to update the data on the clinicopathological traits about this type of tumor.
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2020, Vol. 19 
