A rare case of Erdheim-Chester disease in the breast.
Erdheim-Chester disease (ECD) is rare non-Langerhans histiocytosis with distinctive radiologic and pathologic entities. We report a rare case of which ECD was involving the breast with only eight similar cases reported in the English literature. Our patient was a 52-year-old female patient with ECD involving the breast, mesentery, left kidney, retroperitoneum and the skeleton. The diagnosis was based on distinctive imaging and histopathological findings. The patient received a new novel treatment as part of a clinical trial in the United States and showed clinical and radiological improvement. 
SIMILAR CASES PUBLISHED: 8
Razan F. Binyousef, Department of Radiology,, King Abdullah Medical City,, PO Box 108741 Jeddah 21351,, Saudi Arabia . T: +966122720373, razan.binyousef@gmail.com, ORCID: http://orcid.org/0000-0002-0656-681X.
Razan F
RF
Binyousef
Aboelkhair M
AM
Al-Gahmi
Zahid Rahman
ZR
Khan
Elham
E
Rawah
D001941:Breast Diseases / Q000000981:diagnostic imaging*; D031249:Erdheim-Chester Disease / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008327:Mammography; D008875:Middle Aged