Abstract
Four cases of parapharyngeal space tumors are reported.Case 1, a 19-year-old woman, had a huge neurinoma.Case 2, an 81-year-old woman, had a huge liposarcoma.Case 3, a 60-year-old man, had a huge pleomorphic adenoma.Case 4, a 42-year-old man, had a huge neurinoma.In all four cases, CT scan showed the tumors were so huge that they filled the parapharyngeal space and almost reached the skull base, but the patients had few symptoms. These tumors were removed by a cervical approach.We compared them with other Japanese cases reported from 1977 to 1987. There were 116 cases of parapharyngeal space tumors. The male to female ratio was 2:3. Neurinoma and pleomorphic adenoma were most common, but there were 15 malignant tumors. Since many organs are located in the parapharyngeal space, many kinds of tumors were reported. We think dynamic CT scan is useful in pre-operative quantiative study. Intra-oral incision and extra-cervical approaches were both used, the latter when tumors were big.
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