Diffuse infiltrating tumour with the molecular profile of an atypical teratoid rhabdoid tumour (AT/RT SHH‐1B) in an adult patient

We describe a 46-year-old patient with an IDH-wildtype diffusely infiltrating atypical teratoid/rhabdoid tumour (AT/RT), SHH-1B molecular subtype. The unusual histology and subsequent diagnosis in an adult patient will be discussed. In this case report, we describe a 46-year-old patient with a brain lesion identified with imaging studies following a minor head injury. Initially suspected to be diffuse glioma, detailed histological, immunohistochemical and molecular investigations revealed characteristics consistent with an atypical teratoid/rhabdoid tumour (AT/RT), SHH-1B molecular subtype. image