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Isolated Forefoot Juvenile Xanthogranuloma: Unique Case Study and Treatment in a Pediatric Patient
Brian S Derner1, Kristine Hoffman2, Amy Storfa3
1Second Year Resident, Highlands-Presbyterian/St. Luke's Podiatric Medicine and Surgery Residency Program, Denver, CO.
Insights
Juvenile xanthogranuloma, a rare childhood condition, presented atypically as a deep forefoot mass in a teen. This case highlights diagnostic challenges and the importance of immunohistochemistry for accurate identification.
Area of Science:
- Histiocytic Disorders
- Pediatric Pathology
- Dermatopathology
Background:
- Juvenile xanthogranuloma (JXG) is a benign histiocytic proliferation typically affecting infants and young children.
- Common presentations involve superficial skin lesions on the head, neck, or trunk.
- JXG is generally self-limiting, with most cases resolving spontaneously.
Observation:
- This case study details a solitary soft tissue mass in the forefoot of a 17-year-old patient.
- Initial diagnosis was tuberous xanthoma, later revised to juvenile xanthogranuloma.
- Notably, no superficial dermatological abnormalities were clinically apparent, with the mass confined to deeper tissue layers.
Findings:
- Immunohistochemical staining was crucial for differentiating JXG from other conditions.
- The deep-seated nature of the mass and the patient's age represent unique aspects compared to typical JXG presentations.
- The soft tissue mass was successfully treated, with no recurrence observed during a 12-month follow-up period.
Implications:
- This case expands the known clinical spectrum of juvenile xanthogranuloma presentation.
- It underscores the diagnostic utility of advanced staining techniques in challenging pediatric soft tissue masses.
- Highlights the importance of considering JXG in deeper soft tissue lesions, even in older pediatric patients without typical skin findings.
Abstract:
Juvenile xanthogranuloma is a benign histiocytic cell proliferative disorder that occurs in early childhood. The most common presentation occurs within the first 2 years of life with papular or nodular changes to the skin on the head, neck or upper trunk. This case study documents the findings and treatment of a single solitary soft tissue mass in the forefoot of a 17-year-old patient. Unique to this case, the initial diagnosis of tuberous xanthoma was made and, with referral to an outside hospital, changed to a juvenile xanthogranuloma. In addition, unlike most juvenile xanthogranulomas in the literature, there was no superficial dermatological abnormality seen clinically. This change was not a dramatically different diagnosis, but further immunohistochemical staining was necessary for ultimate diagnosis. The soft tissue mass was self-contained to the deeper tissue layers and not the epidermis. The patient was followed for 12 months for possible recurrence and medical workup, without postoperative complications. The purpose of this study was to report on a unique finding and presentation of a xanthogranulomatous soft tissue mass in the forefoot of a pediatric patient.
