Valor de la evaluación combinada de olfación e hiperecogenicidad de sustancia negra en el diagnóstico de la enfermedad de Parkinson

Combined use of substantia nigra sonography and olfactory testing with SS-12, two rapid, safe, and accessible tests, was more specific than each isolated marker for distinguishing patients with PD from patients with ET and control subjects. Since both markers have been described in very early phases of PD, combined use may be helpful in providing early diagnosis of PD.