[Langerhans cell histiocytosis of the stomach with BRAF-V600E-mutation: case report and review of the literature].

Langerhans cell histiocytosis is a disease with different clinical presentations and a wide spectrum of organ involvements. Rarely Langerhans cell histiocytosis can involve the gastrointestinal tract of adult patients. A case of infiltration of gastric mucosa by Langerhans cell histiocytosis is presented. The neoplastic nature of this infiltrate is underlined by the detection of a BRAF-V600E-mutation. Additionally, an overview of the so far 5 cases published in the English literature is provided. The published clinical experience indicates a benign curse of the disease.