A well defined rounded lesion measuring 17mm(AP)x18mm(T)x10mm(CC) is noted in the hypothalamus. It is isointense in T1W and T2W images with avid contrast enhancement. There is no evidence of calcification or hemorrhage. No diffusion restriction. It abuts the mid brain posteriorly and compresses the infundibular recess of the third ventricle posteriorly. There is associated perilesional oedema extending also into the optic chiasm and tracts which appear swollen. However, there is no compression of the optic chiasma or tract. Pituitary gland is normal in size with no focal masses. Sagittal images show the extension of the lesion to the infundibulum and tuber cinerum. Pineal region appeared normal.