Three soft tissue tumors were studied with 99mTc-pertechnetate scintigraphy, 67Ga-citrate scintigraphy and MRI. These tumors included schwannoma, neurofibromatosis and malignant fibrous histiocytoma. On 99mTc-pertechnetate scintigram all patients showed more increased accumulation corresponding to the tumor than on 67Ga-citrate scintigram. In conclusion, 99mTc-pertechnetate scintigraphy may be useful in detection of soft tissue tumors.