Fig. 23From: Skeletal involvement in Langerhans cell histiocytosisa Coronal fat-suppressed T2-weighted MR image reveals focal bone marrow replacement within the femoral diaphysis with a “budding” appearance due to endosteal scalloping and extensive oedema within the bone marrow and the adjacent soft tissues. b Axial T2-weighted MR image in another patient shows circumferential periosteal reaction (arrows) and extensive bone marrow oedema within the bone marrow and the adjacent soft tissues (asterisks)Back to article page