Different Faces of Rathke's Cleft Cyst.

Rathke's cleft cysts (RCC) are rare benign cystic lesions that might present with different imaging features, potentially posing a problem in the radiological diagnosis of cystic sellar lesions. The purpose of this pictorial review is to present an overview of the radioclinical features of RCC through four clinical cases with different radiologic findings confirmed by pathology, as well as reviewing the common differential diagnosis to be considered. The subjects are women, aged 11 to 73 who underwent recent transsphenoidal surgical resection with a postoperative follow-up period of a few months to three years.

Arachnoiditis Ossificans.

This case shows the MRI and CT features of a rare entity, namely arachnoiditis ossificans, which should be recognized in patients with long-standing history of multiple spine surgery.