Ces radiol. 2009, 63(4):327-335

CT imaging of benign tumors and tumor-like lesions in jaw-bonesOriginal article

Jan Baxa¹, Jiří Ferda¹, JiříWalter², Pavel Andrle², Alena Skálová³, Boris Kreuzberg¹

¹ Klinika zobrazovacích metod LF UK a FN, Plzeň

² Stomatologická klinika LF UK a FN, Plzeň

³ Šiklův patologicko-anatomický ústav LF UK a FN, Plzeň

Aim: To assess a value of the multi-detector-row CT (MDCT) in imaging of benign lesions in jaw-bones.

Method: In the period of 5 years (2003-2008) 105 patients (52 female, average age 38 years, range 6-83 years) underwent MDCT of jaw-bones due the suspicion of benign lesion. Range of examination was set from base of orbita to lower edge of mandible. Examinations were performed on 16 and 64-slice CT (Somatom Sensation, Siemens, Forchheim, Germany), the data were acquired using same protocol, inclusive reducing of tube current (collimation 16 × 0.75 mm or 64 × 0.6 mm; gantry station 1 s; pitch 1; tube voltage 120 kV and tube current 90 mAs). All examinations were performed without intravenous administration of contrast agent.

Results: 48 (45.7%) odontogenic lesions (19 tumors and 29 cysts) were found and other 57 (54.3%) non-odontogenic lesions. Most frequent odontogenic tumor was odontoma and ameloblastoma. In the group of non-odontogenic lesions we found most osteoma and osteomyelitis. All findings are summarized in table. In any case from our group wasn't founded lesion as malignant.

Conclusion: MDCT is the proper method for imaging of the benign lesions in jaw-bones including planning of consecutive surgical therapy. Reduction of radiation dose is possible using lower tube current without obvious reduction of image quality. According to our experience, intravenous administration of contrast agent is not necessitating.

Keywords: multidetector-row tomography, benign tumor, jaw-bones, odontogenic tumor, cyst

Accepted: August 10, 2009; Published: December 1, 2009  Show citation