Intestinal duplications are described as uncommon congenital anomalies rarely diagnosed in adults. A case of young woman with obscure abdominal symptomatology is demonstrated. After investigation the cause of it was disclosed surgically. During operation a cystic ileal duplication was exposed and resected. Despite of difficulties calling for another operation, the case was successfully solved. Based on the author’s experience some aspects of these diseases - etiopatogenesis, symptoms, possibilities of examination and complications are discussed and surgery as the main treatment is emphasized.

        Key words: intestinal duplications - diagnosis - therapy - complications