INTRAOPERATIVE USE OF THE MOBILE GAMMA-CAMERA IN LOCALIZING AND EXCISING OSTEOID OSTEOMAS OF THE SPINE

Three patients (ages 12, 13, and 15 years) had histologically verified osteoid osteomas of the spine (specifically in the facet processes of L3, L2, and C5) which were localized preoperatively with nuclear scin tigraphy utilizing technetium 99m diphosphonate. Intraoperative nuclea r scintigraphy utilizing the mobile gamma camera was essential in both localizing the tumor during surgical excision and ensuring adequacy o f excision. The authors strongly recommend intraoperative scintigraphy , and en bloc resection rather than shelling out and curettage. All th ree patients required facet process excision for successful tumor remo val, and therefore required local fusion with internal fixation.