extrathecal

English

Etymology

extra- +‎ thecal

Adjective

extrathecal (not comparable)

1. Located outside of the theca (any sense).
   • 2015, Yehuda Shoenfeld, Nancy Agmon-Levin, Noel R Rose, Infection and Autoimmunity, →ISBN, page 507:

     Antimyelin antibodies are produced in an extrathecal site, as occurs in Sydenham's chorea.

   • 2016, Neuroimaging, →ISBN, page 203:

     These clinical and imaging features are highly suggestive of CSF leak in a patient with SIH syndrome, but more definitive diagnosis is achieved with demonstration of extrathecal CSF collections on spinal imaging (Fig. 10.13).

   • 2017, Jörg Maletz -, Graptolite Paleobiology, →ISBN, page 45:

     Numerous extrathecal developments have been recognized in graptolites, and are here discussed in relation to their position on the colony and the precise development.