A Rare Case of Erdheim-Chester Disease (Non-Langerhans Cell Histiocytosis) with Concurrent Langerhans Cell Histiocytosis: A Diagnostic and Therapeutic Challenge

<div>Non-Langerhans cell histiocytosis: (a) low-power (20x) image shows a histiocytic proliferation which is diffusely positive for CD68 and resembles that of Langerhans cell histiocytosis but with a comparatively low amount of eosinophils and negative immunostaining for CD1a. (b) CD68+. (c) Factor XIII+.</div>

Case Reports in Hematology

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Figure 6: A Rare Case of Erdheim-Chester Disease (Non-Langerhans Cell Histiocytosis) with Concurrent Langerhans Cell Histiocytosis: A Diagnostic and Therapeutic Challenge 

Figure 6 | A Rare Case of Erdheim-Chester Disease (Non-Langerhans Cell Histiocytosis) with Concurrent Langerhans Cell Histiocytosis: A Diagnostic and Therapeutic Challenge 