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commissurotomy

commissurotomy

9.9
An operation that cuts the connections between the two halves of the brain to reduce severe seizures
  • noun
  • /ˌkɒmɪsʊˈrɒtəmi/
  • Specialized
translation icon : comisurotomía
  • After the commissurotomy, the patient experienced fewer seizures and improved cognitive function.

Examples

  • Her progressive mitral stenosis from old rheumatic disease brought her to the university hospital for one of the first commissurotomies, but not soon enough.

    Fiction book (1993)
  • Hemispheric dominance was demonstrated by severing nerve fibers between the left and right hemispheres (a commissurotomy), thus creating two brains.

    Academic text (2000)
  • The doctor performed a commissurotomy to help alleviate the patient’s severe epilepsy symptoms.

  • Many patients with extreme epilepsy find relief after undergoing a commissurotomy procedure.

Synonyms

brain surgery
vscommissurotomy
  • Specialized
24 4.1

An operation on the brain to treat illness or injury

is specifically about cutting connecting fibers between hemispheres to treat severe epilepsy
callosotomy
vscommissurotomy
  • Specialized
9.9

A surgery that cuts the tissue connecting the two halves of the brain to reduce severe seizures from epilepsy

refers to cutting connecting fibers generally rather than naming a single structure
callosectomy
vscommissurotomy
  • Specialized
9.9

An operation that cuts the connection between the two sides of the brain to reduce severe seizures

focuses on cutting connecting fibers between hemispheres rather than only the named structure
split-brain technique
vscommissurotomy
  • Specialized
9.7

A surgery that cuts the connection between the two halves of the brain

targets only the connecting fibers between the two hemispheres rather than other crossings

Surface Forms

Morphology

commissurotomy = commissure (opaque) = commissure + otomy

The form literally means 'cutting of a commissure', but both 'commissure' and the medical combining suffix '-otomy' are rare/specialized, so an average learner cannot derive the meaning from familiar components.

Etymology

Commissurotomy comes from the parts commissure which means 'joining' and -otomy which means 'cutting', as in lobotomy. So it literally means 'cutting a join', which is why a commissurotomy cuts the connections between the two sides of the brain to help control severe seizures.