松果體部の腫瘍—特にPinealoma以外の腫瘍に就いて

Tumors in the Region of the Pineal Body.:a Clinicopathologic Study of 18 Cases

　松果體部に發生せる腫瘍の大半はPinealomaであるが，此所で記載せんとする諸症例，亦後に掲げる諸文献にも見られる通り，肉眼的には松果體から生じたと思われる腫瘍であつても，病理組織學的には松果體細胞より構成された腫瘍で無い場合が時折遭遇せられる。

　現在迄に京大荒木外科教室に於いて手術又は剖檢並びに組織學的に確證せられた松果體部の腫瘍が18例あるが，其の中の半分即ち9例がPinealomaでは無かつた。斯くも高率を以てPinealoma以外の腫瘍が松果體部に發生してゐる事は注目に値する。

Out of 18 cases of tumors arisig from the region of the pineal body, 9 cases were confirm-ed to be pinealomas and the remaining 9 were non-pinealomatous growths. In this paper, brief clinical and pothologic descriptions are given of a representative case (Case 1) of the pinealomas and of the 9 non-pinealomas. The Histopathologic pictures of the latter were pine-aeoblastomas (Cases 2,3 and 4), papillary epe-ndymoma plus ependymoblastoma (Case 5), epe-ndymoblastoma plus primary eperdymal gliosis (Case 7), spongioblastoma polare (Case 7), glio-blastoma (Case 8) and pineal teratomas (Cases 9 and 10), respectively. It is noteworthy that tumors other than pinealomas in the region of the pineal body, in Araki's series, constitute a half (66—29%, the level of significance=0.05) of all the tumors arising from this region. Pathologic studies of tumors of the pineal body seem to support the view that this organ is of neurogenic organ. It is, however, pointed out that when a tumor in the pineal region is in question, a meningioma may possibly occur ex-cept those tumors mentioned above.