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In acromegaly basal serum GH greater than 14 mIU/l, no suppression on OGTT and GH secreting tumor detection on MRI pituitary fossa.
Dividing this region into the pituitary fossa, cavernous sinuses and the suprasellar cisterns can be helpful.
The anterior edge of the pituitary fossa is completed laterally by the middle clinoid process and the posterior boundary is formed by the dorsum sellae, the superolateral angles of which are expanded to form the posterior clinoid process (1).
Herein, we describe the first case of a pigmented papillary epithelial neoplasm arising within the pituitary fossa, which in addition underwent anaplastic progression following multiple resections and radiation.
The plain skull radiographs revealed an enlarged pituitary fossa with erosion of posterior clinoid caused by a non-functional hypophysial adenoma of 28 mm diameter.
The mass shows intracranial extension involving pituitary fossa and suprasellar cistern region.
The cavernous sinus is a venous vascular structure situated between the layers of the dura, bordering the pituitary fossa and the sphenoid sinus.
The internal carotid artery (ICA), optic nerve prominences, pituitary fossa and clivus were identified.
Computed tomography (CT) at that facility showed a nonenhancing mass occupying the right sphenoid sinus with bony expansion and erosion into the pituitary fossa.