1 research outputs found
Correlation of 3-T MRI and CT findings with patient symptoms and treatment outcome in radiofrequency ablation of osteoid osteoma
Objective: The aim of this prospective study was to evaluate pre- and
post-treatment MRI and CT findings of osteoid osteoma (OO) patients
treated with radiofrequency thermo-ablation (RFTA) and to compare these
findings with visual analog scale (VAS) scores.
Methods: Sixteen patients (4 females and 12 males; mean age of 18.87 +/-
8.75 years (range: 8-37)) with OO were examined with CT and MRI, at
baseline and at an average of 3 months following the procedure. On pre-
and post-procedural CT and MRIs, OO-related findings were recorded.
Treatment success was evaluated with VAS scores.
Results: Baseline VAS scores were 8 or 9 and follow-up scores were 0 or
1, indicating no early recurrences.
Nidus diameters decreased significantly after the procedure (p = 0.027,
p = 0.002, and p = 0.002; and p = 0.001, p = 0.001, p = 0.001 for AP, ML
and CC nidus diameters for CT and MRI, respectively).
The mean nidus volume were significantly decreased after the procedure
(p = 0.001, for CT and MRI). On post-procedural images, cortical
thickening, the signal intensity and contrast enhancement of the nidus
and the extent of periostitis were significantly decreased (p = 0.019, p
= 0.001, p = 0.001 and p = 0.034, respectively). There was no
significant change in nidus calcification, perinidal cortical and
intramedullary sclerosis, periosteal reaction, bone deformity, bone
marrow and soft tissue edema, joint effusion and synovitis after the
procedure (p = 0.253, p = 0.062, p = 0.245, p = 1, p = 1, p = 0.429, p =
0.371, p = 0.625, p = 1).
Conclusion: Although the changes in imaging findings may be helpful in
early follow-up of OO patients treated with RFTA, these changes alone
cannot be used with accuracy in predicting treatment response. (C) 2019
Turkish Association of Orthopaedics and Traumatology. Publishing
services by Elsevier B.V