1. Less commonly ectasia of the sacral nerve root sheaths may occur. 2. Keratoconus occurring after refractive surgery is called Corneal Ectasia . 3. Duct ectasia syndrome in the classical meaning is associated with additional histological changes. 4. Dural ectasia is an example of a spinal cord lesion that may affect continence. 5. It is rare to have bilateral neck swelling due to internal jugular vein ectasia . 6. Increases in corneal curvature are thought to be caused by corneal thinning-induced ectasia . 7. Correlation of duct widening with the " classical " symptoms of duct ectasia syndrome is unclear. 8. Duct ectasia syndrome has been associated with histopathological findings that are distinct from a simple duct widening. 9. PMD is characterized by bilateral thinning ( ectasia ) in the inferior and peripheral region of the cornea. 10. Corneal ectasia is a progressive thinning of the cornea; the most common form of this condition is keratoconus.
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