In recent years, CT-guided RFA has replaced en bloc surgical resection as the standard of care in the majority of cases of
osteoid osteoma.
Angiogenesis was reduced in all the groups by comparison with the second week, and
osteoid was hardly ever found in the cases (figure 6).
Recurrence rate is less than 10% with power burr.8 A new non-invasive radiation-free method is under observation - magnetic resonance guided focussed ultrasound ablation technique - which focuses ultrasound waves on
osteoid osteoma.
Importantly, however, a measurable callus comprising a mixture of fibrous, cartilaginous, and
osteoid tissue components in varying degrees was observed.
(e) Histopathological image showing mature well-capsulated adipose tissue with intermittent
osteoid. (f) Lamellar osseous tissue adjacent to adipose tissue visible on higher magnification.
Microscopically, these lesions show varying components of
osteoid, osteoblastic cells, and spindle cells [4].
(3) retrospectively reviewed patients with benign bone lesions and documented that 30% of the diagnosable lesions were osteochondromas, 28% bony cysts, 12% en-chondromas, 11%
osteoid osteomas, and 6% non-ossifying fibromas.
The neoplastic bone is eosinophilic when unmineralized (
osteoid) and basophilic/purple if mineralized.
Foci of bone and
osteoid formation were also seen (Figures 3 and 4).
The following parameters were identified: bone volume/total tissue volume (BV/TV), %; mineralized volume/total tissue volume (MV/TV), %;
osteoid volume/bone volume (OV/BV), %;
osteoid volume/total tissue volume (OV/TV), %; bone surface area/bone volume (BSA/BV), %; bone surface area/total tissue volume (BSA/TV), %; trabecular thickness (TbTh), [mu]m; trabecular number (TbN), mm; and intertrabecular space (TbSp), [mu]m.