We report a rare case of multiple retroperitoneal schwannomas, initially believed to be an adrenal carcinoma with metastasis. These benign tumors were discovered in a patient presenting with vague back pain. Preoperative radiographic and endocrine evaluations suggested a nonfunctioning adrenal tumor. The final diagnosis and its juxta-adrenal origin were confirmed by histological and immunohistochemical studies. A review of the literature on retroperitoneal schwannoma is included.
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Hurley et al. (1994) studied this question.