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  • Title: Laparoscopic resection of ancient schwannoma embedded in the psoas muscle.
    Author: Seo IY, Boldbaatr Y, Choi KH.
    Journal: Surg Laparosc Endosc Percutan Tech; 2011 Dec; 21(6):e336-8. PubMed ID: 22146187.
    Abstract:
    Schwannoma is a tumor originating from the Schwann cell of the peripheral nerve sheath. The diagnosis of schwannoma is based on histologic analysis of surgically excised sample. Retroperitoneal ancient schwannoma, a variant of schwannoma, is rarely observed in clinical practice. We report the case of a 46-year-old man with a retroperitoneal tumor embedded in the psoas muscle, which was treated by laparoscopic resection. The operative result was good, and pathologic analysis revealed a 5.5 × 4.5 cm ancient schwannoma.
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