Strain elastography features of epidermoid tumours in superficial soft tissue: differences from other benign soft-tissue tumours and malignant tumours

Title
Strain elastography features of epidermoid tumours in superficial soft tissue: differences from other benign soft-tissue tumours and malignant tumours
Author
이승훈
Keywords
SQUAMOUS-CELL CARCINOMA; INCLUSION CYSTS; EMPHASIS; SONOELASTOGRAPHY; ULTRASOUND; DIAGNOSIS
Issue Date
2015-04
Publisher
BRITISH INST RADIOLOGY
Citation
BRITISH JOURNAL OF RADIOLOGY, v. 88, Page. 1-8
Abstract
Objective: We evaluated ultrasonographic features of superficial epidermoid tumour with a focus on strain elastography (SE) features that will help in the differential diagnosis of epidermoid tumour from other benign and malignant soft-tissue tumours. Methods: We retrospectively evaluated ultrasonographic and SE data of 103 surgically confirmed superficial soft-tissue tumours and tumour-like lesions: 29 cases of epidermoid tumour, 46 cases of other benign tumours and 28 cases of malignant tumour. SE and B-mode imaging were performed at the same time. SE characteristics were assigned into four grades (1-4) according to their elasticity. Interobserver agreement for the four SE scores between the two radiologists was analysed using kappa statistics. We classified each SE finding as a hard lesion (SE Score 3-4) or soft lesion (SE Score 1-2) and compared these findings using the chi(2) test to identify whether a significant difference in mass hardness existed among epidermoid tumour, other benign tumour and malignant tumour. Results: Overall interobserver agreement according to the four SE scores was moderate (kappa=0.540), and overall agreement for the hardness [soft (Score 1-2) or hard (Score 3-4)] was almost perfect (kappa=0.825). Malignant tumours showed higher SE scores (3-4, hard nature) than did epidermoid tumour or other benign soft-tissue tumours. There were no differences in SE score between epidermoid tumour and other benign tumours. Conclusion: Superficial epidermoid tumour exhibits a softer nature than does malignant tumour but does not have a different SE pattern from other benign tumours. Advances in knowledge: SE features of epidermoid tumour might be helpful in differentiating from other benign and malignant tumours.
URI
http://www.birpublications.org/doi/10.1259/bjr.20140797http://hdl.handle.net/20.500.11754/24161
ISSN
0007-1285; 1748-880X
DOI
10.1259/bjr.20140797
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COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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