"mucocoele: centred in the sphenoid sinus, no solid enhancement"
"Pituitary region masses include lesions in the sella turcica, suprasellar cistern, parasellar region include cavernous sinuses, and basisphenoid/clivus. Several mnemonics have been popularised, including SATCHMO."
"pituicytoma: arise from the neurohypophysis and infundibulum, indolent, often absent pituitary bright spot, T2 hypo-isointense with prominent flow voids"
"spindle cell oncocytoma: indistinguishable from macroadenoma, shows intense and early heterogenous enhancement"
"pituitary lymphoma: rare, vivid possibly heterogenous enhancement, restricts diffusion"
"chordoma: T2 hyperintense, commonly in patients from 20-40, arise from the clivus"
"Langerhans cell histiocytosis (most common)"
"Rathke cleft cyst: intrasellar, non-enhancing cystic lesion, cyst with a dot sign"
"pituitary macroadenoma: ≥10 mm, sellar and suprasellar extension sometimes with snowman sign, remodelling of the sella"
"pituitary blastoma: rare, infants and young children"