Fig. 2

Four common tumors in the sellar region. These tumors often mimic SPADSD. (a-1, a-2) MRI of a patient with a pituitary tumor growing in the suprasellar region. The mass shows uneven enhancement, the optic chiasm is elevated, and the pituitary is compressed at the left posterior of the tumor. The tumor appears “hoisted”. (b-1, b-2), MRI of a patient with a cystic solid craniopharyngioma in the sellar region and suprasellar region. There is visible enhancement at the edge of the lesion and no enhancement in the sac. The pituitary stalk cannot be observed and the optic chiasm is elevated. (c-1, c-2) MRI a patient with a hair cell astrocytoma in the suprasellar region. It shows enhancement of the visible lesion edge and patchy enhancement in the lesion. The pituitary stalk and optic chiasm are under pressure, and there is no abnormality in pituitary morphology. (d-1, d-2) MRI of a patient with a saddle nodular meningioma. The tumor showed a uniform enhancement, revealing the meningeal tail sign. The optic chiasm, pituitary morphology, size and signal all show no abnormalities. The area enclosed by the red dotted line in the eight images is the area where the tumors grow