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The Feasibility of Ultrasonography in Defining the Size of Jaw Osseous Lesions.

Shahidi S, Shakibafard A, Zamiri B, Mokhtare MR, Houshyar M, Mahdian S - J Dent (Shiraz) (2015)

Bottom Line: The size of the lesions was measured by USG and then compared with CT or CBCT.Moreover, the correlation amongst the echographic patterns and histopathologic results was evaluated.Findings of this study suggested that USG might be feasible in estimating the size of intra-osseous jaw lesions with little underestimation.

View Article: PubMed Central - PubMed

Affiliation: Biomaterial Research Center, Dept. of Oral Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.

ABSTRACT

Statement of the problem: Jaw bone lesions are common pathologic conditions. The role of ultrasonography in evaluation of the extra-osseous lesions is confirmed, however, this imaging modality is not the diagnostic routine for the intra-osseous jaw lesions.

Purpose: The purpose of this study was to evaluate the efficiency of ultrasonography in diagnosis of intra-osseous jaw lesions concerning their size and content and also to study its correlation with the histopathological findings.

Materials and method: For this study, 15 patients with intra-osseous jaw lesions in the maxilla and mandible were selected from those referred to the Department of Oral Surgery. Panoramic imaging, computed tomography (CT) or cone beam computed tomography (CBCT) and ultrasonography (USG) were performed for all the lesions. The size of the lesions was measured by USG and then compared with CT or CBCT. Moreover, the correlation amongst the echographic patterns and histopathologic results was evaluated.

Results: In 12 cases, size values were in complete agreement with CT or CBCT. The size of 3 lesions could not be measured by the radiologist due to the thickness of buccal cortical plate.

Conclusion: Findings of this study suggested that USG might be feasible in estimating the size of intra-osseous jaw lesions with little underestimation. This study also confirmed that ultrasound imaging was a very useful imaging technique which could provide significant diagnostic information regarding the content of jaw bone lesions where the buccal bone thickness was thin enough.

No MeSH data available.


Related in: MedlinePlus

A case of odontogenic keratocyst. (A) Panoramic view reveals a radiolucent lesion in left posterior region of the maxilla. (B) CBCT shows lytic lesion and a prominent septum inside the lesion. (C) Ultrasound image shows a well demarcated hypoechoic lesion.
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Figure 2: A case of odontogenic keratocyst. (A) Panoramic view reveals a radiolucent lesion in left posterior region of the maxilla. (B) CBCT shows lytic lesion and a prominent septum inside the lesion. (C) Ultrasound image shows a well demarcated hypoechoic lesion.

Mentions: A hypoechoic area is an area on the image with fewer reflected echoes, darker than the surrounding tissues which can be an indication of a semi-solid content.[9-11] Three lesions revealed a hypoechoic image based on the nature of their content which was infected radicular cysts and odontogenic keratocyst (OKC). Histologically, these two types of cysts contain a denser liquid compared to other cysts. Higher viscosity might be due to pus accumulation in the infected radicular cyst and the keratin content in OKC. Therefore, their hypoechogenicity in comparison with other cysts (anechogenicity) may confirm this internal viscosity (Figure 2). Based on the oral radiology textbooks, the density or viscosity of keratin contents of OKC would not affect the internal architecture of this lesion in conventional radiographs; however, USG had the advantage of differentiating these lesions with respect to these changes in keratin viscosity.


The Feasibility of Ultrasonography in Defining the Size of Jaw Osseous Lesions.

Shahidi S, Shakibafard A, Zamiri B, Mokhtare MR, Houshyar M, Mahdian S - J Dent (Shiraz) (2015)

A case of odontogenic keratocyst. (A) Panoramic view reveals a radiolucent lesion in left posterior region of the maxilla. (B) CBCT shows lytic lesion and a prominent septum inside the lesion. (C) Ultrasound image shows a well demarcated hypoechoic lesion.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4664031&req=5

Figure 2: A case of odontogenic keratocyst. (A) Panoramic view reveals a radiolucent lesion in left posterior region of the maxilla. (B) CBCT shows lytic lesion and a prominent septum inside the lesion. (C) Ultrasound image shows a well demarcated hypoechoic lesion.
Mentions: A hypoechoic area is an area on the image with fewer reflected echoes, darker than the surrounding tissues which can be an indication of a semi-solid content.[9-11] Three lesions revealed a hypoechoic image based on the nature of their content which was infected radicular cysts and odontogenic keratocyst (OKC). Histologically, these two types of cysts contain a denser liquid compared to other cysts. Higher viscosity might be due to pus accumulation in the infected radicular cyst and the keratin content in OKC. Therefore, their hypoechogenicity in comparison with other cysts (anechogenicity) may confirm this internal viscosity (Figure 2). Based on the oral radiology textbooks, the density or viscosity of keratin contents of OKC would not affect the internal architecture of this lesion in conventional radiographs; however, USG had the advantage of differentiating these lesions with respect to these changes in keratin viscosity.

Bottom Line: The size of the lesions was measured by USG and then compared with CT or CBCT.Moreover, the correlation amongst the echographic patterns and histopathologic results was evaluated.Findings of this study suggested that USG might be feasible in estimating the size of intra-osseous jaw lesions with little underestimation.

View Article: PubMed Central - PubMed

Affiliation: Biomaterial Research Center, Dept. of Oral Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.

ABSTRACT

Statement of the problem: Jaw bone lesions are common pathologic conditions. The role of ultrasonography in evaluation of the extra-osseous lesions is confirmed, however, this imaging modality is not the diagnostic routine for the intra-osseous jaw lesions.

Purpose: The purpose of this study was to evaluate the efficiency of ultrasonography in diagnosis of intra-osseous jaw lesions concerning their size and content and also to study its correlation with the histopathological findings.

Materials and method: For this study, 15 patients with intra-osseous jaw lesions in the maxilla and mandible were selected from those referred to the Department of Oral Surgery. Panoramic imaging, computed tomography (CT) or cone beam computed tomography (CBCT) and ultrasonography (USG) were performed for all the lesions. The size of the lesions was measured by USG and then compared with CT or CBCT. Moreover, the correlation amongst the echographic patterns and histopathologic results was evaluated.

Results: In 12 cases, size values were in complete agreement with CT or CBCT. The size of 3 lesions could not be measured by the radiologist due to the thickness of buccal cortical plate.

Conclusion: Findings of this study suggested that USG might be feasible in estimating the size of intra-osseous jaw lesions with little underestimation. This study also confirmed that ultrasound imaging was a very useful imaging technique which could provide significant diagnostic information regarding the content of jaw bone lesions where the buccal bone thickness was thin enough.

No MeSH data available.


Related in: MedlinePlus