Membranous nephropathy associated with spinal schwannoma.

Clinical cure was effected in a patient with biopsy-proven membranous nephropathy associated with spinal schwannoma. The renal manifestation of nephrotic syndrome antedated the clinical presentation of the spinal tumor. The proteinuria and edema subsided 4 mths after the complete resection of the intradural component and partial removal of the extradural component of the schwannoma. Careful workup in patients with membranous nephropathy should include not only malignant but also benign tumors.