<prompt> The most preferred approach for pituitary surgery as the present time isTranscranialTransethmoidalTrans-sphenoidalTranscallosal  <response>: PITUITARY TUMOURS Classification: 1. Eosinophil Acidophil adenomas 2. Chromophobe adenomas: Differential diagnosis: Meningiomas, aneurysms 3. Basophil adenomas 4. Prolactin-secreting adenomas Treatment: Surgery: By subfrontal craniotomy approach or transphenoidal approach. Care should be taken not to injure optic chiasma, aeries, cavernous sinus. Ref: SRBs Manual of Surgery, 4th Edition, pg. no. 1186 