Does a pituitary cyst disappear spontaneously: A case report

The authors describe an unusual case of large pituitary cyst and discuss its spontaneous disappearance in the follow-up. A 27-year-old male patient with sudden onset of nausea and headache admitted with a sellar hypodense mass lesion diagnosed by computed tomography (CT). Magnetic resonance (MR) imaging of the patient with normal neurological examination showed intrasellar mass lesion hypointense on T1 weighted and hyperintense on T2 weighted MR images. Conservative treatment was selected for the patient with no neurological deficits. On the serial follow-up images, the cystic lesion disappeared without any intervention. Based on the previous reports, onset of symptoms, clinical findings and MRI characteristics, this case was diagnosed as a Rathke's cleft cyst with presumed disappearance after the hemorrhage into the cyst. Sellar cysts without neurological deficits may be followed-up without surgical intervention.