A case of a ten year old adopted girl is presented, who had gastrointestinal disturbances, anal pruritus and relapses of urticaria from her fourth year of age. By means of radiological and endoscopis analysis, multiple gastrointestinal polyposis was established. Pathohistological examination of the polyp indicated that tubular adenomas were in question, therefore in the case of this girl it can be stated that she has diffuse tubular gastrointestinal adenomatous polyposis, which is a characteristic of Gardner's syndrome. At the moment of the setting of the diagnosis, the girl had no skin changes nor did she have any radiological changes on the bones of her skull. The first skin changes appeared one year after the diagnosis was set, and they were in the form of maculopapular nodules, comedos of the closed and open type on the forehead and chin.