Two collision sellar lesions: Rathke's cleft cyst with non-functional pituitary adenoma and Rathke's cleft cyst with plurihormonal adenoma

Introduction Collision lesions refer to the uncommon merging of two histologically different pathological conditions from potentially different etiologies, including vascular, inflammatory, infectious and neoplastic [1]. Pre-operative diagnosis of collision sellar lesions is difficult due to their clinical and radiological resemblance to pituitary adenomas. For this reason, an accurate diagnosis is made