We present the case of a 21-year-old woman with an acute monocytic leukemia. When she was in complete hematological remission, she developed rapid progressive hemiparesis on the right caused by a left frontoparietal chloroma as confirmed by surgery and histological examination. Postoperatively, the patient recovered completely, and x-ray therapy followed. Since intracerebral myeloblastic tumors are extremely rare and since the neurosurgeon may be involved in treatment of these lesions, we are encouraged to present our findings.

A 48-year-old woman with diabetes mellitus (type IIb) had to be treated with insulin because of poor blood-sugar control. Infiltrates at the sight of injection occurred with two different porcine insulin preparations, necessitating a switch to human insulin. After the third injection of the latter an anaphylactic reaction developed within minutes. During a pregnancy in 1968 the patient had briefly received bovine insulin. Tests now revealed an immediate-type allergy against all three available species insulins, which was successfully treated by hyposensitisation.