ACTA MEDICA PORTUGUESA, vol.27, no.5, pp.657-660, 2014 (SCI-Expanded)
Introduction: Serum carbohydrate associated antigen (CA19-9) is widely used marker in clinical practice and shows small increases in a few benign diseases. Here we report two cases, a mother and her daughter with slightly elevated CA19-9 levels not accompanied by any clinical pathology.