- Molecular analysis of the Pendred's syndrome gene and magnetic resonance imaging studies of the inner ear are essential for the diagnosis of true Pendred's syndrome. Fugazzola, L., Mannavola, D., Cerutti, N., Maghnie, M., Pagella, F., Bianchi, P., Weber, G., Persani, L., Beck-Peccoz, P. J. Clin. Endocrinol. Metab. (2000)