Intraosseous benign lesions of the jaws: a radiographic study

Is peripheral cortication of intraosseous lesions accurately displayed on panoramic radiography?

OBJECTIVE

The aim of this study was to calculate the sensitivity, specificity, and positive and negative predictive values (PPV and NPV) for the detection of the presence and continuity of peripheral cortication (PC) around benign intraosseous lesions on panoramic radiography (PR), with cone beam computed tomography (CBCT) as the reference standard.

STUDY DESIGN

The sample consisted of the mesial, distal, superior, and inferior borders of 40 bony lesions (n = 160) depicted on both PR and CBCT. Ten observers assessed the PRs. CBCT images were assessed by 2 radiologists. For each lesion, observers classified the 4 borders with regard to the presence of PC, and if present, its continuity. Sensitivity, specificity, PPV, and NPV were calculated for the presence and continuity of PC. Intra- and interobserver agreements were calculated.

RESULTS

PR had sensitivity, specificity, PPV, and NPV for PC detection of 0.844, 0.435, 0.435, and 0.844, respectively. With regard to PC continuity, those values were 0.750, 0.810, 0.577, and 0.904. Observer agreement was slight to fair.

CONCLUSIONS

The high sensitivity and low specificity for the presence of PC indicate a large false-positive rate. The high NPVs suggest greater validity for negative decisions. The findings corroborate the influence of the eggshell effect. Observer agreement rates indicate that interpretation of PC is substantially subjective.

Clinicopathologic Study of Intra- Osseous Lesions of the Jaws in Southern Iranian Population

STATEMENT OF THE PROBLEM

It is necessary for surgeons and practitioners to know about relative incidence and clinicopathologic features of lesions for accurate diagnosis and approach of pathologic lesions. Data are limited about overall incidence of intra-osseous lesions of the jaws in Iranian patients.

PURPOSE

This study evaluated the clinicopathologic features of intra- osseous lesions of the jaws in an Iranian population, in a 22-year period.

MATERIALS AND METHOD

In this cross- sectional retrospective analytical study, 4500 specimens in a 22- year period were reviewed. Baseline data of all patients with intra- osseous lesions including type and location of lesions as well as patients' age and gender, were collected and analyzed by SPSS software using descriptive analysis and Chi-square test.

RESULTS

There were 1121 (25%) intra-osseous lesion. Odontogenic cysts and benign non- odontogenic bone lesions were the most common categories, respectively. The mean age of the patients was 30.1±16, the total male to female ratio was 1.1:1, and the most prevalent location of lesions was posterior of mandible.

CONCLUSION

The results showed baseline information of intra-osseous lesions that were essentially similar to other populations; however, there were a few geographical differences. Further comprehensive studies in other parts of country are required to make a more reliable source of reference for clinicians and surgeons for evaluating and managing their patients more properly.