PRL and neoplasm: Higher baseline tumor volume was significantly associated with optic chiasm compression (OR = 1.002, 95% CI 1.001 – 1.003, p=0.04), sphenoid sinus invasion (OR = 1.00, 95% CI 1.00 – 1.001, p=0.04), elevated baseline PRL levels (β=0.50, p=0.008), and male sex (β=0.52, p<0.0001).