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Clip1:
An
incision the nasal mucosa of the Septum as posterior as possible is made,
and the septum is exposed submucosly with a combination of sharp and blunt
dissection.
The
articulation of the cartilaginous septum with the maxilla is then
dissected free.
A
self retaining Hardy’s nasal speculum is introduced through the tunnel;
the septum is then pushed aside as a single muco-perichondral flap with
the controlateral mucosa The two mucosae are dissected on both side of the
sphenoid and pushed aside by the speculum tips. The perpendicular plate of
the ethmoid and the sphenoid face are exposed. |
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Clip2:
Portions of the bony nasal septum in the operative field should be
resected, and preserved for use during closure, in case the need arises.
Preserving the nasal spine, helps cosmetically. The anterior wall of the
sphenoid is opened by grasping the vomer with a punch; chisel may be
required at times. The exposure is widened with an angled punch.
The sellar
floor should be visible now. Often, the sellar floor is eroded or
extraordinarily thin, and can be fractured with a blunt hook; at
times a chisel or even a drill may be required. |
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Clip3:
The dura is cauterized, incised in X fashion, and the dural
opening is widened by shrinking the margins with cautery. An attempt is
made to develop a cleavage plane between the dura and the tumor in case of
macroadenoma, and the tumor is enucleated |
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Clip4:
The residual tumor is removed with blunt curette and forceps. Excessive
use of suctioning is avoided. Tumor removal starts inferiorly, and
proceeded laterally, from inferior to superior aspects removing tumor.
Next the central portion is removed, followed by the superior portion.
This orderly removal is recommended and minimizes trauma to the pituitary
stalk and secondarily to the hypothalamus, and also avoid entrapment of
more laterally placed tumor.
Following adequate removal, the diaphragma sellae is seen descending down
into the operative field, and
reinforce with a fascia lata graft and fibrin glue. |
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