骨軟部腫瘍の画像診断

抄録

Imaging Diagnosis of bone and soft tissue tumor has shown a great improvement in these 20 years. Especially the appearence of MRI was epochmaking. However, because of the expensive cost, all patients complaining with mass should not be indicated to MRI. Screening of the case which really require MRI is important. In outpatient department, simple and economic examination is important to select the patient. As for bone tumor, plain XP is useful tool in screening. However, plain XP has only limited value in the diagnosis of soft tissue tumor. Computad radiography and ultrasonography were useful tools to diagnose hemangioma, ganglion and lipoma which are common benign tumor. And schwannoma was also diagnosed by the characteristic findings which were referred pain, intermuscular mass demonstrated by computed radiography and biphasic pattern on ultrasonography. If soft tissue tumor did not show above findings, needle biopsy was required and cytological findings showed that the tumor was malignant or benign. According to these findings the indication of CT scan and/or MRI should be decided.