Zhonghua yi xue za zhi · 2014
[Diagnosis and differential diagnosis of testicular epidermoid cyst with MRI].
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Su Jun, Jiang Tao, Liu Xiaojuan, Zhai Renyou
Аннотация
OBJECTIVE: To investigate the MRI characteristics and differential diagnosis of testicular epidermoid cyst.
METHODS: The MRI imaging features of 7 testicular epidermoid cyst cases were retrospectively analyzed and compared with that of testicular seminoma. All cases were examined by contrast-enhanced MRI scans.
RESULTS: The group of 7 cases of testicular epidermoid cyst MRI showed characteristic: On T₁-weighted MR images, some lesions showed low signal-based, center with spotty high signal ("target sign"). On T₂-weighted MRI, some lesions had a laminated appearance, with alternating low and high signal intensity areas ("onion skin" sign). On contrast-enhanced images, all lesions were sharply demarcated low signal intensity masses, and contrast enhancement were not seen in any of the cases.
CONCLUSION: MRI characteristics of testicular epidermoid cyst are distinctive in certain extent. It may express "target sign", "onion skin" sign, T₂ low signal intensity complete rings, and without enhancement.
METHODS: The MRI imaging features of 7 testicular epidermoid cyst cases were retrospectively analyzed and compared with that of testicular seminoma. All cases were examined by contrast-enhanced MRI scans.
RESULTS: The group of 7 cases of testicular epidermoid cyst MRI showed characteristic: On T₁-weighted MR images, some lesions showed low signal-based, center with spotty high signal ("target sign"). On T₂-weighted MRI, some lesions had a laminated appearance, with alternating low and high signal intensity areas ("onion skin" sign). On contrast-enhanced images, all lesions were sharply demarcated low signal intensity masses, and contrast enhancement were not seen in any of the cases.
CONCLUSION: MRI characteristics of testicular epidermoid cyst are distinctive in certain extent. It may express "target sign", "onion skin" sign, T₂ low signal intensity complete rings, and without enhancement.