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| Soft Tissue Masses in the Extremities: The Accuracy of an
Ultrasonographic Diagnosis |
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| Ji Young An, MD1, So Young Park, MD2, Ji Seon Park, MD1, Wook Jin, MD2,
Kyung Nam Ryu, MD1 |
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| 2강동경희대학교병원 영상의학과 |
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| Purpose: We wanted to retrospectively determine the accuracy of an ultrasonographic
diagnosis of superficial soft tissue masses in the extremities by using the histologic
results as the reference standard.
Materials and Methods: From January 2005 to June 2010, 154 patients with soft
tissue masses in the extremities and who underwent ultrasonographic evaluation followed
by biopsy or resection were retrospectively evaluated. The ultrasonographic
and histologic diagnoses of the soft tissue masses were lipoma, ganglion cyst,
hemangioma, neurogenic tumor, giant cell tumor of the tendon sheath, epidermoid
cyst, fibroma, glomus tumor, Baker’s cyst and neurofibromatosis.
Results: Out of 154 patients, 114 (74%) patients showed concordance between the
histologic diagnosis and the ultrasonographic diagnosis, and the remaining 40 (26%)
patients did not. The diagnostic accuracy of each soft tissue mass was 95% for lipoma,
83% for ganglion cyst, 75% for hemangioma, 72% for neurogenic tumor, 50% for
giant cell tumor of the tendon sheath, 43% for epidermoid cyst, 33% for fibroma and
100% each for glomus tumor, fibromatosis and Baker’s cyst. Aside from these tumors,
there were also sarcoma, malignant melanoma, elastofibroma, Kimura disease and
pilomatricoma. Among the cases that showed discordance between the histologic
diagnosis and the ultrasonographic diagnosis, three of them were notable; pilomatricoma
being misdiagnosed as dermatofibroma protuberans, angiolipoma being misdiagnosed
as vascular leiomyoma and malignant fibrous histiocytoma being misdiagnosed
as a malignant soft tissue mass.
Conclusion: The accuracy of an ultrasonographic diagnosis for soft tissue masses
in the extremities varies greatly according to each type of mass. Lipoma, ganglion
cyst, hemangioma, glomus tumor, neurogenic tumor and Baker’s cyst showed a relatively
high rate of concordance between the ultrasonographic diagnosis and the histologic
diagnosis, but epidermoid cyst and fibroma showed a relatively lower rate of concordance. |
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| Keyword : Soft tissues; Ultrasound (US); Soft tissue neoplasm |
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pdf파일 : 167-172안지영.pdf 
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> Journal > Journal Search 
Journal of Korean Society of Ultrasound in Medicine 2011 ; 30 (3) : p.167-172
