RT Journal Article SR Electronic T1 Use of rituximab in lymphomatoid granulomatosis with isolated central nervous system involvement JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e235412 DO 10.1136/bcr-2020-235412 VO 13 IS 9 A1 Jesse Mooneyham A1 Cesar Gentille A1 Andrea Barbieri A1 Shilpan Shah YR 2020 UL http://casereports.bmj.com/content/13/9/e235412.abstract AB A 33-year-old woman presented to the emergency room with severe headaches. A CT scan of the head revealed two brain lesions with associated vasogenic oedema. Diagnostic resection of one of the lesions followed by pathological analysis revealed grade III lymphomatoid granulomatosis (LYG). Staging investigations elsewhere in the body were negative, isolating this case of LYG to the central nervous system, an atypical presentation. After the resection, she was treated with single-agent rituximab 375 mg/m2. The follow-up MRI demonstrated the resolution of brain lesions and no progression of the disease.