RT Journal Article SR Electronic T1 Tumour-induced osteomalacia due to a durally-based intracranial phosphaturic mesenchymal tumour JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e252412 DO 10.1136/bcr-2022-252412 VO 15 IS 11 A1 James Allan Douglas Shand A1 David Kim YR 2022 UL http://casereports.bmj.com/content/15/11/e252412.abstract AB A man in his 40s was referred with persistent hypophosphataemia and bony pain. A serum fibroblast growth factor 23 level was markedly elevated and a diagnosis of tumour-induced osteomalacia was considered. Whole body imaging revealed multiple insufficiency fractures but no osseus tumours. There was, however, a durally-based intracranial lesion whose imaging characteristics were consistent with a meningioma. The tumour was removed, leading to rapid normalisation of the patient’s symptoms and serum markers. Histology confirmed a phosphaturic mesenchymal tumour. We review the literature regarding this rare clinical situation.