E. Elif ÖZKAN, İ. Metin ÇİRİŞ, A. Yeşim YALÇIN, Erol EROĞLU

Retroperitoneal Ancient Schwannoma: A Case Report and Review of Literature Retroperitoneal Ancient Schwannom

Çalışmamızda retroperitonal ancient schwannom tanısı alan bir olguyu literatür eşliğinde sunmayı amaçladık. Olgu Altmış altı yaşında bir erkek hasta şikayeti olmaksızın düz grafide saptanan retroperitoneal kitle ile hastanemize başvurdu. F-18 FDG PET- CT görüntülerinde iliopsoas kasının sağ inferiorunda 26 x 19 mm düzgü sınırlı hipodense hipermetabolik nodüler lezyon izlendi. Tru-cut biyopsi ile elde edilen histopatoloji miksoid liposarkomayı düşündüren miksoid iğ hücreli tümör olarak raporlandı. Hastaya total eksiyon uygulandı. Operasyon patolojisi ancient schwannom olarak değerlendirildi. Adjuvan tedavisiz takip önerilen hasta operasyon sonrası 10. ayda rekürrenssiz izlemde. Sonuç Ancient Schwannom periferal schwan hücrelerinden köken alır. Genellikle benign olarak kabul edilmekle birlikte bazen yanlışlıkla malign olarak değerlendirilebilir. İyi kapsüllü oldukları için komplet rezeksiyon sonrası nüks genellikle beklenmez.

We present here a case of retroperitoneal ancient schwannoma and review this rare entity under the guidence of recent literature. Case An 66-year-old men admitted to our clinic with a retroperitoneal mass in plain radiography without any symptoms. F-18 FDG PET- CT scan revealed 26 x 19 mm regularly contoured hypodense hypermetabolic nodular lesion in right inferior quadrant leaning on ileopsoas muscle. Histopathology from a tru-cut biopsy and was reported as mixoid spindle cell tumor revealing mixoid liposarcoma. The patient underwent total excision of the retroperitoneal mass. Postoperative pathologic diagnosis was reported as ancient schwannoma. The patient was recommended observation without any adjuvant treatment and is free of recurrence in postoperative 10th month. Conclusion Ancient Schwannomas are originating from perineural Schwann cells. They are accepted as benign, but some may be mistakenly termed malignant. As they are well encapsulated, recurrences following complete surgical excision are uncommon.

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