[Treatment-resistant iron-deficiency anemia as an early symptom of occult tumors of the small intestine].
D000328:Adult; D000368:Aged; D000747:Anemia, Hypochromic / Q000209:etiology*; D005260:Female; D006801:Humans; D007414:Intestinal Neoplasms / Q000175:diagnosis*; D007421:Intestine, Small; D008875:Middle Aged
Therapieresistente Eisenmangelanämie als Frühsymptom okkulter Dünndarmtumoren.