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  • Title: [A case of a retroperitoneal schwannoma presenting as hypermetabolic mass in PET-CT].
    Author: Goh PG, Ko KH, Kim ES, Kim YJ, Lee SY, Moon HS, Jeong HY.
    Journal: Korean J Gastroenterol; 2011 May 25; 57(5):323-6. PubMed ID: 21623143.
    Abstract:
    Schwannoma is a benign neoplasm of the Schwann cells of the neural sheath. Most schwannomas occur in the head and neck, and extremities and rarely in the retroperitoneal space. The differentiation of a schwannoma from other malignant tumor or benign tumor is very difficult on a preoperative examination with ultrasonography, computed tomography or magnetic resonance imaging. Furthermore, the lesion with increased fluorodeoxyglucose uptake in PET-CT cannot exclude malignant tumor. Therefore, this lesion needs surgical excision and a histological examination with immunohistochemical staining. We report a case of schwannoma occuring in the retroperitoneal space that incidentally discovered by PET-CT for health-check up. Pathologic confirmation by laparoscopic excision was done.
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