respiratory system disorder Langerhans cell histiocytosis eosinophilic granuloma https://github.com/monarch-initiative/mondo/issues/6754 eosinophilic xanthomatous granuloma UMLS:C0014461 NCIT:C3016 MEDGEN:4979 A clinical variant of Langerhans cell histiocytosis characterized by unifocal involvement of a bone (most often), skin, or lung. Patients are usually older children or adults usually presenting with a lytic bone lesion. The etiology is unknown. Morphologically, eosinophilic granuloma is characterized by the presence of Langerhans cells in a characteristic milieu which includes histiocytes, eosinophils, neutrophils, and small, mature lymphocytes. eosinophilic granuloma SCTID:129000002 ICDO:9752/1 GARD:0025166 MONDO:0020517 MedDRA:10014956 icd11.foundation:1377407737 Orphanet:99871 ICD9:277.89 MESH:D004803