The gross appearance of the lesion along with the marked cellular homogeneity of the fine-needle aspiration sample made histiocytic sarcoma a primary differential diagnosis. However, we could not ...

After 15 months, the disease became resistant to pexidartinib and transformed to histiocytic sarcoma. Patient 2 has skin-only involvement of a xanthogranuloma disorder. A KIF5B-FGFR1 fusion was ...

Check if you have access via personal or institutional login The presentation of hematolymphoid and histiocytic diseases can vary widely between children and adults as can age-related differential ...