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Figure 2: Superior view of sellar region. (a) Osseous anatomy of sellar cavity. Sella turcica extend from tuberculum sella anteriorly to dorsum sella posteriorly. Chiasmatic groove separates tuberculum sella from planum sphenoidale anteriorly, (b) Sagittal section showing nasal cavity in relation to skull base. Sella turcica with pituitary gland can be seen as a prominent bulge into sphenoid sinus. Superior, middle and inferior turbinates can be seen in lateral nasal wall, (c) Pituitary gland can be seen here with its dural relationships from superior aspect. Diaphragma sella covers the most of the pituitary gland superiorly except small opening in the center, which transmit pituitary stalk. Diaphragma can be seen extending laterally as roof of cavernous sinus. Internal carotid artery and optic nerves can be seen in relation to pituitary gland. Right optic nerve has been lifted to show ophthalmic artery, (d) Dura from roof is removed to expose pituitary gland. Pituitary gland has two distinct lobes, anterior is bigger and darker compared to posterior lobe. Pituitary stalk can be seen arising from top of the gland, and (e) Superior view of sella and parasellar region showing relationship of pituitary gland to cavernous sinuses. Cavernous sinuses have been dissected to show its neurovascular contents. Internal carotid artery takes a S-shaped course while travelling inside cavernous sinus and forms a groove along lateral wall of sphenoid sinus known as carotid sulcus. Inferior hypophseal artery can be seen going medially after origin to supply posterior pituitary gland. Dorsal clival artery can be seen arising from meningohypophseal trunk and giving supply to clival dura and abducens nerve. Oculomotor, trochlear and trigeminal nerve can be seen going in to lateral wall of cavernous sinus

Figure 2: Superior view of sellar region. (a) Osseous anatomy of sellar cavity. Sella turcica extend from tuberculum sella anteriorly to dorsum sella posteriorly. Chiasmatic groove separates tuberculum sella from planum sphenoidale anteriorly, (b) Sagittal section showing nasal cavity in relation to skull base. Sella turcica with pituitary gland can be seen as a prominent bulge into sphenoid sinus. Superior, middle and inferior turbinates can be seen in lateral nasal wall, (c) Pituitary gland can be seen here with its dural relationships from superior aspect. Diaphragma sella covers the most of the pituitary gland superiorly except small opening in the center, which transmit pituitary stalk. Diaphragma can be seen extending laterally as roof of cavernous sinus. Internal carotid artery and optic nerves can be seen in relation to pituitary gland. Right optic nerve has been lifted to show ophthalmic artery, (d) Dura from roof is removed to expose pituitary gland. Pituitary gland has two distinct lobes, anterior is bigger and darker compared to posterior lobe. Pituitary stalk can be seen arising from top of the gland, and (e) Superior view of sella and parasellar region showing relationship of pituitary gland to cavernous sinuses. Cavernous sinuses have been dissected to show its neurovascular contents. Internal carotid artery takes a S-shaped course while travelling inside cavernous sinus and forms a groove along lateral wall of sphenoid sinus known as carotid sulcus. Inferior hypophseal artery can be seen going medially after origin to supply posterior pituitary gland. Dorsal clival artery can be seen arising from meningohypophseal trunk and giving supply to clival dura and abducens nerve. Oculomotor, trochlear and trigeminal nerve can be seen going in to lateral wall of cavernous sinus