Germinoma Misdiagnosed As Lymphocytic Hypophysitis

A 34-year-old male patient with decreased libido, visual disturbance, and intermittent severe headache was referred to our Pituitary Center.Endocrinological evaluation at presentation revealed panhypopituitarism and hyperprolactinemia (Table 1).Despite appropriate hormone replacement therapy, his symptoms persisted.Ophthalmologic examination revealed decreased visual acuity, right temporal hemianopsia, and bilateral pallor of the optic disk.Pituitary magnetic resonance imaging (MRI) showed a thickening in the upper half of the pituitary stalk that extended to the right half of the chiasm (Figure 1a).