title: [The difficulty of proving the abscence of a tumor in the presence of its signs].
mesh_terms: D000293:Adolescent; D000328:Adult; D001932:Brain Neoplasms / Q000175:diagnosis*; D002648:Child; D003937:Diagnosis, Differential; D006801:Humans; D008875:Middle Aged
vernacular_title: De la difficulté de prouver l'absence d'une tumeur en présence de ses signes