[Benign Subcutaneous Nodules for the Diagnosis of Which Ultrasonography Is Useful].

Miho Yaaaoka, Akira Kuramochi, Keiko Kutani, Kaori Katoh, Taeko Saitoh, Kenji Ikebuchi
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Abstract

Objective: We analyzed sonographic appearance of dermatofibroma, schwannoma, small-sized venous mal- formation, glomus tumor, nodular fasciitis, and thrombus for effective use in the diagnosis.

Methods: We evaluated with sonography 44 subcutaneous nodules in histopathologically proven cases.

Results and discussion: 1) Sonography was the most useful for diagnosing schwannoma. Six of 8 lesions were diagnosed correctly from sonographic appearance. They had increased posterior echo and Doppler flow signals. 2) Sonography was helpful in diagnosis of subungual glomus tumor, though malignant melano- ma should be excluded. One of 6 glomus tumors was not detected but all of the other had well-defined mar- gins and showed internal vascularity. Three subungual glomus tumors were diagnosed from sonographic appearance although 2 nonsubungual tumors were not. 3) It was difficult to diagnose nodular fasciitis with sonography. Two of 5 cases were not detected. The other 3 lesions were ill-defined, and 2 were hy- perechoic and 2 showed internal vascularity. Interval between emergence of the lesion and sonography ex- amination was important. This duration was more than 50 days in lesions not detected with sonography, about 20 days in 2 hyperechoic lesions, and 6 days in a hypoechoic lesion. 4) Dermatofibromas (n =14) were also difficult to be diagnosed. The region was very characteristic, that is, in the upper dermis. Other find- ings, such as hypoechoic appearance and well-defined margin, were nonspecific.

Conclusion: Sonography was more useful for diagnosing schwannoma and glomus tumor. We have to know their characteristic appearance on sonography to use sonography effectively. [Original].

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【超声对良性皮下结节的诊断价值】。
目的:分析皮肤纤维瘤、神经鞘瘤、小静脉畸形、血管球瘤、结节性筋膜炎和血栓的超声表现,以提高超声诊断的有效性。方法:对经病理证实的44例皮下结节进行超声检查。结果与讨论:1)超声对神经鞘瘤的诊断最有价值。8例病变中有6例超声诊断正确。后路回声和多普勒血流信号增加。2)超声检查有助于诊断甲下血管球瘤,但应排除恶性黑色素瘤。6例血管球瘤中1例未检出,其余均有明确的边界和内部血管。3例经声像图诊断为蹄下血管球瘤,2例未被诊断为非蹄下肿瘤。3)结节性筋膜炎超声诊断困难。5例中有2例未被发现。其他3个病灶界限不清,2个超声不全,2个显示内部血管。病变出现和超声检查之间的时间间隔很重要。超声未检测到的病变持续时间超过50天,2个高回声病变约20天,低回声病变约6天。4)皮肤纤维瘤(n =14)也难以确诊。该区域很有特点,即在真皮上部。其他发现,如低回声外观和边界明确,是非特异性的。结论:超声检查对神经鞘瘤和血管球瘤有较高的诊断价值。为了有效地利用超声检查,我们必须了解它们在超声上的特征表现。(最初的)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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