Though the literature on the pineal body and its tumors is extensive, cases occasionally occur which are unique and for this reason are of universal scientific interest. Three such cases, all of tumor in the region of the pineal body—a mixed tumor, an astroblastoma and a calcified meningioma or psammoma—are reported here clinically and pathologically. According to my knowledge, such conditions in the pineal body have not yet been described.
REPORT OF CASES
Case 1.
—A Mixed tumor of the pineal body with teratoid features in a boy aged 14. The clinical symptoms were due largely to pressure on the quadrigeminal plate.
History.
—The patient was admitted to the Cook County Hospital on Nov. 14, 1933, with a complaint of occipital headache, diplopia, vomiting and gradually developing stupor of five days' duration. The patient had sustained a fall prior to the onset of the foregoing symptoms (the information was obtained