My dad feels that someone is putting smoke on him and says daily that person is coming to throw smoke directly on him. Earlier he used to say during night times but recently started saying even day time he is coming to hurt him by releasing smoke on him. We know that no one is coming but still he insists that someone is coming. Consulted to psychiatric and he suggested to take MRI brain scan. We did scan couple of days back and got the report as below:: Large well defined extraaxial T1 hypo, T2, FLAIR Hyperintense Lesion measuring 3.4*3*3 cm is noted in the Sella and is seen extending into suprasellar region causing displacement of optic chiasma without diffusion restriction. The lesion is seen in contact with bilateral ICA for about 90-180 degrees. Pituitary gland is not separately seen.