A resection grade with a different pathological grade

A fictional convexity meningioma is removed with its dural attachment and involved abnormal bone, according to the supplied operative record. The pathology report then describes findings that place the tumor in a higher WHO category than an ordinary low-grade example. A trainee treats the pathological result as proof that the surgical Simpson grade must also have changed, despite no new information about what was removed. The supervisor asks the trainee to identify the question answered by each system. The scenario supplies no recurrence percentage or automatic radiotherapy prescription. It concerns clear reporting of two different classification concepts and the need to preserve both observations during a later multidisciplinary management discussion.