which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Microscopic colitis (MC) is characterized by chronic watery diarrhea. MC comprises two entities: collagenous colitis (CC) and lymphocytic colitis (LC), which are separated by typical histopathological characteristics. The colonic mucosa appears endoscopicall...

BACKGROUND Microscopic and endoscopic transsphenoidal approaches to the sellar are well established. Surgical freedom is an important skull base principle that can be measured objectively and used to compare approaches. OBJECTIVE To compare the surgical freedom of 4 transsphenoidal approaches to the sella turcica to aid in surgical approach selection. METHODS Four transsphenoidal approaches...