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Increased attenuation in odontogenic keratocysts with computed tomography: a new finding
K Yoshiura1, Y Higuchi, Y Ariji
1Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kyushu University, Fukuoka, Japan.
Dento Maxillo Facial Radiology
|August 1, 1994
Summary
Increased attenuation area (IAA) in odontogenic keratocysts (OKCs) on CT scans is linked to desquamated keratin, often seen in inflamed, long-standing cysts. This finding aids in diagnosing OKC.
Area of Science:
- Oral and Maxillofacial Radiology
- Pathology
- Oncologic Imaging
Background:
- Odontogenic keratocysts (OKCs) can present with increased attenuation areas (IAA) within their cystic cavities on computed tomography (CT) scans.
- The diagnostic significance of IAA in OKC has not been fully elucidated.
Purpose of the Study:
- To investigate the radiological and histological significance of IAA in the cystic cavity of odontogenic keratocysts.
- To determine the relationship between IAA presence and cyst characteristics, CT findings, and histological features.
Main Methods:
- Radiological assessment of IAA presence in 26 suspected OKC cases on CT scans.
- Correlation of IAA presence with CT findings, cyst appearance, and histological data.
- Experimental CT scan of keratin material (hair) to assess attenuation properties.
Main Results:
- IAA was frequently observed in large, multilocular OKCs.
- No correlation was found between IAA and aggressive CT features or cyst content.
- Subepithelial inflammation was common in cysts with IAA.
- CT density of desquamated keratin mimicked IAA.
Conclusions:
- IAA in OKC cystic cavities is attributed to desquamated keratin.
- The presence of IAA may indicate long-standing or inflamed multilocular OKCs.
- IAA can serve as a significant diagnostic finding for odontogenic keratocysts.