顔面軟部組織に発生したランゲルハンス細胞組織球症の1例

Langerhans cell histiocytosis (LCH) is a rare proliferative disorder characterized by the accumulation of Langerhans cells, and wide-ranging organ involvement. In the oral and maxillofacial region many cases have been reported in the hard tissue of jaws; cases occurring in facial soft tissue are rare. We report a case of LCH arising in the facial soft tissue of a 26-year-old man who presented with an ulcerative lesion on the lower lip and erythema around the left eyelid skin.