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[A case of sacral neurinoma].

A case of sacral neurinoma diagnosed in a 67-year-old woman whose clinical symptomatology consisted for fully 54 years of faint but persistent episodes of lumbo- and sacralgia is reported. Only at the terminal moment of observation did the patient present motor and sensitivity disturbances in the lower extremities, paralysis of the sphincters and sacral decubitus. The mass was identified radiologically and submitted to biopsy. It was localized in the left wing of the sacrum and on the corresponding side of the iliac bone, and presented a diameter of 6 X 9 cm. The slow, practically asymptomatic course, the exclusively intra-osseous site, the histological report and late onset of a cauda syndrome, suggest that the origin of the neoplasia lies in the sacral nerves.