case_images: PMC6997609_01
case_images: Bone, seen at top right, involved by sheets of mixed inflammatory cells composed of histiocyte, eosinophils, lymphocytes, and plasma cells.
case_images: 10.1177_2324709619886757-fig1.jpg
case_images: PMC6997609_01_10.1177_2324709619886757-fig1.jpg
case_images: fig1-2324709619886757
case_images: Thus, she was offered outpatient treatment with systemic chemotherapy with prednisone versus vinblastine/prednisone (see Figures 1-4).
case_images: Immunohistochemical stain preparation showing diffuse CD1a expression in the histiocytes (brown color).
case_images: 10.1177_2324709619886757-fig2.jpg
case_images: PMC6997609_01_10.1177_2324709619886757-fig2.jpg
case_images: fig2-2324709619886757
case_images: Thus, she was offered outpatient treatment with systemic chemotherapy with prednisone versus vinblastine/prednisone (see Figures 1-4).
case_images: Coronal post-contrast magnetic resonance imaging shows homogenously enhancing soft tissue mass in the right mastoid air cells, extending along the tegmen tympani, associated with reactive dural thickening.
case_images: 10.1177_2324709619886757-fig3.jpg
case_images: PMC6997609_01_10.1177_2324709619886757-fig3.jpg
case_images: fig3-2324709619886757
case_images: Thus, she was offered outpatient treatment with systemic chemotherapy with prednisone versus vinblastine/prednisone (see Figures 1-4).
case_images: Axial and coronal computed tomography image shows opacification and calescent destructive changes of right mastoid air cells, erosions of right tegmen, middle ear ossicles, and sigmoid plate as well as osteolytic lesion in right lateral mass of C1.
case_images: 10.1177_2324709619886757-fig4.jpg
case_images: PMC6997609_01_10.1177_2324709619886757-fig4.jpg
case_images: fig4-2324709619886757
case_images: Thus, she was offered outpatient treatment with systemic chemotherapy with prednisone versus vinblastine/prednisone (see Figures 1-4).