Primary intramedullary melanocytoma presenting with lower limbs, defecation, and erectile dysfunction: A case report and review of the literature

Figure 1 Preoperative and postoperative magnetic resonance imaging. A: Sagittal T1-weighted image (TIWI); B: Sagittal T2-weighted image (T2WI); C: Sagittal TIWI with gadolinium enhancement; D: Sagittal TIWI; E: Sagittal T2WI; F: Sagittal TIWI with gadolinium enhancement; G: Axial TIWI with gadolinium enhancement at the T10 level; H: Axial TIWI with gadolinium enhancement at the T10 level. A-C and G: Intramedullary melanocytoma (white solid arrows) and syringomyelia (white dashed arrows) were located at the T9-T10 level and T5-T8 level, respectively; D-F and H: An approximate gross total resection of the intramedullary melanocytoma was achieved in spite of tiny residual (orange arrow).