G. Papaefthymiou et al., PRIMITIVE NEUROECTODERMAL TUMOR (PNET) EXTENDING INTO THE CEREBELLOPONTINE ANGLE - CASE-REPORT, Wiener Klinische Wochenschrift, 105(21), 1993, pp. 614-617
The most common primary tumors of the cerebellopontine angle are growt
hs of the 8th cranial nerve. The occurrence of other tumors in this ar
ea is very rare and may cause neuroradiological misinterpretation. We
report the findings in a 37-year-old male patient suffering from a pri
mitive neuroectodermal tumor (PNET) extending from the latero-basilar
cerebellar hemisphere into the cerebellopontine angle (CPA) and causin
g cerebellar dysfunction as well as symptoms of typical cerebelloponti
ne angle lesions. Differential diagnosis of tumors found in this area
is given as well as a histological description of the tumor along with
immunohistochemical findings and aspects of possible prognostic relev
ance.