Clinicopathological features of retrorectal tumors: nine years of experience in a single institution: P115

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Aim:Primary tumors of the retrorectal (orpresacral) space are rare lesions. This study aimed to investigate the clinocopathological features of retrorectal tumors.Methods:The medical records of fifteen patients who underwent surgical resection for the retrorectal tumor from March 2002 to April 2010 at St. Vincent Hospital in Korea were examined retrospectively.Results:Out of fifteen patients, thirteen were female and two male. The most common symptom was low abdominal discomfort (nine, 60%). CT (nine, 60%) and MRI (ten, 67%) were the most frequently performed imaging studies. Abdominal approach was performed in eight patients (laparoscopic approach in three patients) and posterior approach in five patients. Abdominosacral approach was performed in two patients. Mean size of tumors was 6.16 ± 2.94 cm. Fourteen tumors were confirmed to benign nature in pathology, except a chondrosarcoma. Mature teratoma (four) and neurilemoma (four) were the most common tumors. The patient with a chondrosarcoma had died at postoperative 51st month due to recurrence of tumor.Conclusion:Surgical resection for the retrorectal tumor is recommended to relievepressure symptoms,provide a definitive diagnosis and rule out malignancy. The surgical strategy should be decided according to the localization by imaging study and nature of the retrorectal tumor.

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