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유골골종 : 수술전 CT 유도하의 핵표식
Osteoid Osteoma : Preoperative CT Guided Nidus Marking

서경진    (경북대학교 의과대학 진단방사선과학교실  );
  • 초록

    Purpose : To evaluate the utility of preoperative nidus localization guided by computed tomography(CT).Methods and Materials : In the light of clinical, radiographic, and imaging findings, osteoid osteoma wassuspected in all ten patients studied. An osteoid osteoma of the tibia was present in seven cases, and of thefemur in three. During the 24 hours preceeding surgery, a small hole was drilled directly over the nidus with a 15gauge Ostycut bone biopsy needle, using CT for control and guidance. The hole and needle tract were stained withGentian violet and GE 9800 and Hi Speed Advantage CT (GE) were used to obtain both 2D and 3D images. Results :Each osteoid osteoma was in the cortex of the bone, nidi ranged in size from 10x6x6 to 40 $\times$ 7 $\times$ 9mm and thesclerotic area around each varied in size between 150 $\times$ 18 $\times$ 14 and 50 $\times$ 15 $\times$ 12mm. Marking was successful on thefirst attempt in eight cases, on the second attempt in one case and on the third attempt in one case. The averagetime per marking attempt was 15 minutes. In the operating field, stained marking on the cortex was easily found inall cases. With the marking it was possible to excise only as much of the bone as necessary and none of the tenpatients suffered complications either during or after the procedure. The diagnosis of osteoid osteoma washistopathologically confirmed in all patients. Conclusion : CT guided nidus marking of an osteoid osteoma assuredprecise localization during surgery ; bone resection was therefore minimal and the time required for surgery wasreduced. The procedure is a simple, safe, effective method for precise and easy nidus excision.


  • 주제어

    Bone neoplasms, CT .   Osteoma.  

  • 참고문헌 (18)

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