2011-2012 Basic and Clinical Science Course, Section 7: by John Bryan Holds MD

By John Bryan Holds MD

Info the anatomy of the orbit and adnexa, and emphasizes a realistic method of the overview and administration of orbital and eyelid issues, together with malpositions and involutional alterations. Updates present details on congenital, inflammatory, infectious, neoplastic and hectic stipulations of the orbit and accent constructions. Covers key features of orbital, eyelid and facial surgical procedure. contains various new colour photographs. significant revision 2011-2012.

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Extra resources for 2011-2012 Basic and Clinical Science Course, Section 7: Orbit, Eyelids, and Lacrimal System (Basic & Clinical Science Course)

Sample text

The frontal sinuses develop fro m evaginations of the fronta l recess and cannot be seen radiographically until the sixth year of life. Pneumatization of the frontal bone continues through childhood and is complete by early adulthood (Fig 1- 10). The sinuses can develop asymmetricall y and vary greatly in size and shape. The frontal sinuses are almost always separated by the midline intersinus septum. Each sinus drains through separate frontonasal ducts and empties into the anterior portion of the midd le meatus.

Ly over the lesion . If possible, lhe cyst wall should be Figur. 3·3 Child with a typical laterally located dermoid tumor (epithelial choristomal. (Courtesy of Roberta Gausas. ) CHAPTER 3: Co nge nital Orbital A no m al ies . 37 main tai ned dur ing surgery. Rupture of the cyst can lead to an acute infl ammatory pro cess if pa rt of the cyst wa ll or any of th e conten ts rem ain within the eyelid or orbit. If th e cyst wall is ruptured, the surgeon sho uld rem ove the ent ire wall and the n thoroughly irrigate the wound to re move all cyst contents.

1993;7( Pt 5):639- 647. Secondary Studies Secondary studies that are performed for specific indications include venog raph y and arteriograph y. These studies are rarely used but may be helpful in specific cases. CHAPTER 2: Eva luation of Orbital Disorders. 31 Venography Before th e era of CT and MRI, orbital venog raphy was used in the diagnosis and man agement of orbital varices and in the stud y of the cavernous sinus. Contrast material is inj ected into the fro ntal or the angular vein to reveal a venous abnormality.

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