spongioblastoma

spongioblastoma

 [spun″je-o-blas-to´mah]

a tumor containing spongioblasts; types include glioblastoma and gliosarcoma.

spon·gi·o·blas·to·ma

(spŭn'jē-ō-blas-tō'mă),

1. A glioma consisting of cells (elongated, spindle-shaped, and sometimes pleomorphic, with one or two fibrillary processes) that resemble the embryonic spongioblasts, occurring normally around the neural canal of the human embryo; it grows relatively slowly, usually originating in the brainstem, optic chiasm, or infundibulum; infiltrates adjacent structures or causes compression of the third and fourth ventricles. Spongioblastomas were formerly subclassified as spongioblastoma polare and spongioblastoma unipolare.

2. Obsolete term for glioblastoma multiforme.

[spongioblast + G. -oma tumor]

spon·gi·o·blas·to·ma

(spŏn'jē-ō-blas-tō'mă)

A glioma consisting of cells (elongated, spindle-shaped, and sometimes pleomorphic, with one or two fibrillary processes), which resembles the embryonic spongioblasts, occurring normally around the neural canal of the human embryo; it grows relatively slowly, usually originating in the brainstem, optic chiasm, or infundibulum, and infiltrates adjacent structures or causes compression of the third and fourth ventricle.

[spongioblast + G. -oma tumor]