Skin Imaging of Juvenile Xanthogranuloma: In Vivo Diagnosis by Line‐Field Confocal Optical Coherence Tomography

A 15-year-old boy presented with a yellowish, asymptomatic nodule on the left forearm, which developed in the last year. A diagnosis of juvenile xanthogranuloma was confirmed with histopathology. Line-field confocal optical coherence tomography (LC-OCT), a new skin imaging technique, was performed prior to surgery, showing a strong correspondence with histopathological sections. As juvenile xanthogranuloma is a benign disorder of the pediatric age, LC-OCT may represent an alternative to surgery for achieving a fast diagnosis in uncertain cases.