title: [Clinically undetectable primary neoplasms. Review of 31 cases].
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis / Q000175:diagnosis*; D009369:Neoplasms / Q000175:diagnosis* / Q000473:pathology
vernacular_title: Neoplasia primaria clínicamente no detectable. Revisión de 31 casos.