Ann Dermatol.  2008 Dec;20(4):200-203. 10.5021/ad.2008.20.4.200.

An Unusual Juvenile Xanthogranulomaon a Finger MCP Joint

Affiliations
  • 1Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea. leejd@olmh.cuk. ac.kr

Abstract

Juvenile xanthogranuloma (JXG) is a benign self-limited histiocytic proliferative disorder that usually occurs in early childhood. JXG appears as reddish to yellow, papules, or nodules, and although the head, neck, and trunk are the most frequent locations, it can occur at any body site. However, JXG involving the finger is rare. Histologically, JXG is characterized by an ill-defined, unencapsulated, dense histiocytic infiltrate within the dermis, some of which is contained in Touton giant cells, foreign body giant cells and foamy cells. Because the cutaneous lesions spontaneously regress, treatment is not usually indicated. The authors report a case of JXG in a 4-year-old girl who had tender, yellowish papule on the ventral aspect of the MCP joint of the right fourth finger consistent with JXG.

Keyword

Finger; Juvenile xanthogranuloma

MeSH Terms

Dermis
Fingers
Giant Cells
Giant Cells, Foreign-Body
Head
Joints
Neck
Preschool Child
Xanthogranuloma, Juvenile

Figure

  • Fig. 1 A tender, solitary, firm, dome-shaped yellowish papule on the ventral aspect of the right forth finger over the MCP joint.

  • Fig. 2 (A) Dense histiocytic infiltrate in the dermis including Touton giant cells (arrow) (H&E, ×100). (B) A typical Touton giant cell and a foreign body giant cell (H&E, ×400).


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