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Washington University Experience | NEOPLASMS (HEMATOLYMPHOID) | Langerhans Cell Histiocytosis (LCH) | 18A LCH (Case 18) H&E 1

Case 18 History ---- The patient was an 11 year old boy with a tumor involving the posterior elements of the spine at the level of L5 that erodes bone and expands into the adjacent soft tissue. Operative procedure: L4-5/S1 fusion with resection of bony tumor. ---- 18A An intraoperative smear shows the cells have a modest amount of eosinophilic, foamy cytoplasm, convoluted, grooved nuclear contours, open chromatin, and a moderately prominent nucleolus.

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