Paragangliomas are rare neoplasms originating from the paraganglial tissues composed of extra-adrenal chromaffin cells and 10% are localized to the retroperitoneal area. These tumors may be functional or non-functional due to the catecholamine secretion. Approximately 1/3 of retroperitoneal paragangliomas are malignant. The primary treatment of these tumors is complete surgical resection. Although there are risks of metastasis and recurrence for malignant paragangliomas; the metastasis, malignant transformation and recurrence potentials for benign paragangliomas are not known yet. Therefore, benign paragangliomas should be followed-up for long time as malignant paragangliomas. Herein, we present a 75 year-old patient with a benign, abscessed retroperitoneal paraganglioma in the retroperitoneal area of vesicouterine space mimicking adnexal mass. Copyright © 2011 by Türkiye Klinikleri.