Unifocal Gastric Langerhans Cell Histiocytosis in a Child-A Unique Case to Remember.

Langerhans cell histiocytosis (LCH) is the most common of the histiocytic disorders and occurs when the body accumulates too many CD1a/CD 207 positive Langerhans cells, a subset of the histiocytes in certain parts of the body where they can form tumors or damage organs. LCH is not a very common diagnosis in the pediatric age group. More than two-thirds of cases have the single-system disease with bones or skin as the commonly involved sites. Here, we present a 4-year-old child who had acute abdominal pain as chief complaint and etiological workup eventually led to a diagnosis of gastric LCH without affection of any other organ system. To the best of our knowledge, this is the first report of a unifocal gastric LCH in a child.