The present histopathologic study comprises fourteen cases of leukemia. The records of twelve were placed at my disposal by Dr. R. H. Jaffé from his necropsy material at the Cook County Hospital, and records of two were from the Research and Educational Hospitals of the University of Illinois. Five cases were of the myelogenous, four of the lymphatic, two of the myeloblastic, two of the stem cell, and one of the monocytic, type. The brains all showed definite changes.
REPORT OF CASES
Case 1.
—Acute myeloblastic leukemia.
History.
—A white man, aged 74, entered the Cook County Hospital on Feb. 8, 1930, because of pain in the left side of the mouth for two weeks. A year previously the left eye had been removed for a melanoblastoma.
Examination and Course.
—The patient was emaciated. The temperature was 99 F., the pulse rate 96 and the respiratory rate 20. The blood