頸部に原発したMalignant Schwannomaの一例

概要

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A 37-year-old man first developed a mass in the left infraauricular region in 1970, at the age of thirty. He received removal of the tumor three times in other hospitals, in 1971, 1972 and 1973 respectively. In December 1974, he was first admitted in Kurume University Hospital for recurrent tumor of the left cervical region. Histological diagnosis at the previous hospitals was not determined. No possible primary lesion was detected. Radical neck dissection was performed. Histological diagnosis was undifferentiated carcinoma.<BR>In March 1977, a chest X-ray taken at a follow up examination revealed pulmonary metastasis. In August 1977, the patient developed a tumor of the left cervical region, again. It was removed and examined histologically. In contrast to the previous diagnosis, the diagnosis by a pathologist was malignant schwannoma. Based upon re-examination of the previous specimens, we determined that the lesion was malignant schwannoma from the beginning. Some review of literature was given and the reasons for the diagnostic error were discussed.
耳鼻と臨床会の論文