title: [Gray scale echography current possibilities].
mesh_terms: D005069:Evaluation Studies as Topic; D006801:Humans; D008722:Methods; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis*; D014463:Ultrasonography; D014570:Urologic Diseases / Q000175:diagnosis*; D014571:Urologic Neoplasms / Q000175:diagnosis*
vernacular_title: Ecografía con escala de grises: posibilidades actuales.