title: Immunolocalization of prealbumin as a marker for carcinoid tumours.
abstract: Using a PAP immunoperoxidase technique, we have demonstrated the plasma protein prealbumin in 92 (87 per cent) out of a series of 106 carcinoid tumours from various sites. The frequency of detection was greater than with the conventional stains; 83 (78 per cent) of the cases were positive for one or more of these stains. The Grimelius technique was by far the most effective of the conventional stains; it was positive in 81 (76 per cent) cases. We were unable to detect prealbumin in a variety of carcinomas. Although prealbumin identification did not appear to have any advantage over the routine stains in midgut-derived carcinoids, it was much more effective in the diagnosis of bronchial (foregut) and rectal (hindgut) carcinoids. We believe that prealbumin staining offers a cheap, reliable and valuable method for the detection of carcinoid tumours in routine histopathology.
mesh_terms: D001063:Appendiceal Neoplasms / Q000032:analysis / Q000473:pathology; D001984:Bronchial Neoplasms / Q000032:analysis / Q000473:pathology; D002276:Carcinoid Tumor / Q000032:analysis* / Q000473:pathology; D006651:Histocytochemistry; D006801:Humans; D007124:Immunoenzyme Techniques; D011228:Prealbumin / Q000032:analysis*; D013194:Staining and Labeling
chemical_list: D011228:Prealbumin