Recurrent Astrocytoma, IDH-Mutant, Grade 4

**Semantic type:** Neoplastic Process

**Definition:** The reemergence of astrocytoma, IDH-mutant, Grade 4, after a period of remission.

**Synonyms:** - Recurrent Astrocytoma, IDH-Mutant, Grade IV - Recurrent Glioblastoma, IDH-Mutant - Recurrent Glioblastoma, IDH-Mutant