Spinal anesthesia is one of the most used techniques in elderly patients, with doses varying according to the proposed surgery and the surgeons [1]. Schwannomas are benign, encapsulated, slow-growing neoplasms. made up of neoplastic schwann cells differentiated [2]. The most used diagnosis is Magnetic Resonance Imaging (MRI) and confirmation is obtained through histological and immunohistochemical studies [2]. In order to study the reclassification of Melanotic Schwannomas (MS), a study was carried out in 40 clinicopathologic, immunohistochemical, and gene expression cases [3]. The purpose of this case report was diagnosed after the appearance of paresis in a patient undergoing urologic treatment under spinal anesthesia, two days after the procedure requiring hospitalization, and explain the possibility of performing spinal anesthesia in a patient with xanthochromic puncture.