Abstract
Although otologic involvement by leukemic infiltration was supposed to be unusual, increasing number of cases have been reported in recent years, probably due to the advance of chemotherapy, improved remission rate and longer survival of leukemic patients. Two cases of myelogenous leukemia with infiltration of mastoid bone were reported. One is 15-year-old girl with acute myelogenous leukemia, which had been well controlled for 1 year, developed a sudden onset of facial nerve palsy. The other is 30-year-old female with chronic myelogenous leukemia and blastic crisis, complained hearing loss. As both cases had exudate in the tympanic cavity, the punctures were carried out through the eardrum. The pathological study of these exudate cells revealed the involvement of mastoid bone by leukemia. The cytologic examination of exudate in the tympanic cavity is simple, time-sparing and of little burden to the patient. This technique is very useful and supposed to take the place of the exploratory surgery of mastoid cavity which is previously considered necessary for the correct diagnosis.
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