Langerhans Cell Histiocytosis

Has anyone ever seen a STEP 1 level question on anything related to a Langerhans cell histiocytosis like eosinophilic granuloma, Letterer-Siwe, or Hand-Schuller-Christian disease? I'm jw bc I have yet to see it on UWORLD but its in pathoma as well as our school's in house exams.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums