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What is effacement brain?
Sulcal effacement is a local secondary sign of mass effect in the cranium. Any lesion exerting mass effect on brain parenchyma can push adjacent gyri together, thereby displacing the CSF from the sulci.
What is effacement of basal cisterns?
Effacement of the basal cisterns As well as causing mass effect from one side to the other, an intracranial lesion may cause mass effect downwards into the posterior fossa. This may manifest as effacement of the basal cisterns.
What does mild effacement of the thecal sac mean?
The thecal sac contains the cerebrospinal fluid which provides nutrients and buoyancy to the spinal cord. When effacement or impingement is identified on the report, it means that the sheathe surrounding your spinal cord and nerves is being pressed on.
What does it mean to be 80 effaced when pregnant?
What is 80 percent effaced? Once your cervix reaches 80 percent effacement, it’s almost short enough to allow your baby through the uterus, assuming it is accompanied by dilation. You may reach 80 percent effacement or higher during the early stage of labor, or this may happen once you reach active labor.
What happens when the thecal sac is compressed?
If there is central stenosis and marked compression of the entire dural/thecal sac, the patient may demonstrate paralysis (e.g., cauda equina syndrome) with sphincter loss (bladder and rectal dysfunction).
What is the meaning of the word effacement?
Also found in: Dictionary, Thesaurus, Legal, Wikipedia. effacement. the obliteration of form or features; said of the cervix uteri during labor when it shortens from 1 or 2 cm in length to paper thin and there is no longer a cervical canal but only an external cervical os.
When do you use the term efface in radiology?
Efface is a term frequently used by radiologists, most often in the context of CSF -containing spaces in the brain ( sulci and ventricles ). Unfortunately, it is often used incorrectly.
What does effacement in a spinal cord context mean?
In general, the word effaced entry means the thinning out of a structure, such as a cervix preparing for childbirth. The cord, and spinal fluid would be effaced or thinned out around the structure.
Is there such a thing as partial effacement?
This implies that no CSF remains in those spaces. If there is incomplete obliteration of the space then one can use the term ‘partial effacement’. It is important to note that intrinsic obliteration, for example in the setting of congenital asymmetry of the ventricles, is not effacement.