Cryptic Suprasellar Germinoma Presenting as Autoimmune Hypophysitis in a Pediatric Patient (P9-11.008)

Pituitary stalk lesions (PSLs) are challenging to diagnose due to the overlapping clinical and radiologic features across various pathologies, which in children often cause endocrine and visual issues. Accurate diagnosis is crucial. We report the case of a 9-year-old female misdiagnosed with idiopathic hypophysitis, later identified as a suprasellar germinoma after her conditioned worsened on corticosteroids.