It has been reported that some patients have been misdiagnosed with Malignant Melanoma, when in fact the correct diagnosis in their specific case was Langerhans Cell Histiocytosis.
Langerhans cell histiocytosis is a rare condition where the body makes too many immature Langerhans cells. These cells are called histiocytes and when built up can form tumours, and damage tissue, bone and organs. Most commonly occurs in skin and bones of children. Symptoms include a painful lump in the bone that does not go away, a broken bone for no obvious reason, and loose teeth or swollen gums. It can be commonly misdiagnosed as malignant melanoma.