Fig. 2

Cranial MRI imaging and pathological results. a, b The axial and sagittal planes of the cranial-enhanced MRI clearly showed the tumor in the sellar region. The tumor was significantly enhanced, the boundary was clear, the morphology was irregular, the bilateral carotid arteries were encased, and the size was approximately 5 cm × 4 cm × 3 cm. c HE staining (×200) revealed cells with a diffuse distribution. The morphology was consistent, there were fewer interstitial cells, and sinusoid capillaries were observed. d The immunohistochemistry results were PRL(+). Pathology confirmed that the lesion was a PRL-type pituitary adenoma