Endodermal cyst ventral to the lower brain stem.
A 28-year-old woman presented with a rare case of endodermal cyst located ventral to the lower brain stem manifesting as recurrent aseptic meningitis. Computed tomography and magnetic resonance imaging demonstrated a cystic mass located ventral to the lower brain stem and extending from the prepontine to the upper cervical (C-2) cistern. The lesion was totally removed through a retrosigmoid craniotomy and C1-2 hemilaminectomy. Histological and immunohistochemical examination showed the cyst was derived from the endoderm. The histological diagnosis was endodermal cyst. Early diagnosis and surgical removal are important for patients with these cysts.
Matsunaga
Shigeo
S
Department of Neurosurgery, National Hospital Organization Yokohama Medical Center, Yokohama, Kanagawa, Japan. shigeo-m@mui.biglobe.ne.jp
Fujitsu
Kazuhiko
K
Yagishita
Saburo
S
Ichikawa
Teruo
T
Takemoto
Yasunori
Y
Takeda
Yukihiro
Y
Miyahara
Kousuke
K
Niino
Hitoshi
H
Shiina
Takeki
T
D000328:Adult; D020295:Brain Stem Neoplasms / Q000473:pathology* / Q000601:surgery; D018240:Endodermal Sinus Tumor / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans