Picture of Juvenile Xanthogranuloma
Juvenile xanthogranuloma is a condition that causes lesions on the neck, head, trunk, and sometimes on other areas of the body. The lesions are yellow, tan, or reddish bumps. They may appear internally on the liver, heart, lungs, kidneys, or in the bone marrow. The condition is more common in males than females. The appearance of one lesion is most common, although multiple lesions may occur. Infants and children are most often affected.
The exact underlying cause of juvenile xanthogranuloma is unknown, but it's believed that an overproduction of immune cells known as histiocytes may be involved. The lesions typically resolve without treatment within 1 to 2 years. If extensive disease or internal lesions are present, a biopsy and surgical removal may be required.
Text Reference: American Osteopathic College of Dermatology: "Juvenile Xanthogranuloma"