Abstract
The local findings of MEO and SCC are similar to each other, therefore it is sometimes difficult to make a differential diagnosis. The former is basically inflammation while the later is carcinoma. It is necessary to accurately diagnose MEO and SCC as soon as possible in order to begin the appropri ate treatment in a timely manner. We compared 2 cases of MEO with 9 cases of SCC that we experi enced in our clinic over the last 7 years with the following results: It is almost impossible to differentiate them based on the symptoms or general findings, however, we did notice that vagus pa ralysis tends to occur in cases of MEO, while facial paralysis tends to develop in cases of SCC. In ad dition, such factors as any associated illness or past history, bacteriological examination or SCC antigen in the blood do not play a significant role in making a correct daignosis. CRP in the blood is comparatively useful because it is apt to increase in the case of MEO. A pathological examination is extremely useful and exfoliative cytology, in particular, is important when a biopsy is difficult to perform under some conditions. Exfoliative cytology is also useful for following up these cases. We have thus come to the conclusion that it is difficult to make a differential diagnosis based on the find ings of CT or Ga scintigraphy, except in highly typical cases.
