Difference between revisions of "Ultrasonography of superficial soft tissues"

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===Lipoma/Liposarcoma===
 
===Lipoma/Liposarcoma===
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File:Ultrasonography of a lipoma.jpg|A '''lipoma''': hyperechoic compared to adjacent muscle, and relatively well-defined, with miniature hyperechoic lines.<ref name=Chernev2013>{{Cite journal|author=Chernev I, Tingey S.|title=Thenar intramuscular lipoma: A case report.|journal=J Med Cases|year=2013|volume=4|issue=10|pages=676-8}}</ref>
 
File:Ultrasonography of a lipoma.jpg|A '''lipoma''': hyperechoic compared to adjacent muscle, and relatively well-defined, with miniature hyperechoic lines.<ref name=Chernev2013>{{Cite journal|author=Chernev I, Tingey S.|title=Thenar intramuscular lipoma: A case report.|journal=J Med Cases|year=2013|volume=4|issue=10|pages=676-8}}</ref>
 
File:Scrotal ultrasonography of liposarcoma.jpg|'''Liposarcoma''': In this case a heterogeneous mass consisting of an upper hyperechoic portion, corresponding to lipomatous matrix, and areas of hypoechogenicity corresponding to nonlipomatous components.<ref name="MakTzeng2012">Content originally copied from: {{cite journal|last1=Mak|first1=Chee-Wai|last2=Tzeng|first2=Wen-Sheng|title=Sonography of the Scrotum|year=2012|doi=10.5772/27586}} from {{cite web|url=https://www.intechopen.com/books/sonography/sonography-of-the-scrotum||title=Sonography|author=Kerry Thoirs}} ISBN: 978-953-307-947-9, Published: February 3, 2012, under the [https://creativecommons.org/licenses/by/3.0/ CC-BY-3.0 license].</ref>
 
File:Scrotal ultrasonography of liposarcoma.jpg|'''Liposarcoma''': In this case a heterogeneous mass consisting of an upper hyperechoic portion, corresponding to lipomatous matrix, and areas of hypoechogenicity corresponding to nonlipomatous components.<ref name="MakTzeng2012">Content originally copied from: {{cite journal|last1=Mak|first1=Chee-Wai|last2=Tzeng|first2=Wen-Sheng|title=Sonography of the Scrotum|year=2012|doi=10.5772/27586}} from {{cite web|url=https://www.intechopen.com/books/sonography/sonography-of-the-scrotum||title=Sonography|author=Kerry Thoirs}} ISBN: 978-953-307-947-9, Published: February 3, 2012, under the [https://creativecommons.org/licenses/by/3.0/ CC-BY-3.0 license].</ref>
File:Scrotal ultrasonography of liposarcoma mimicking a lipoma.jpg|'''Liposarcoma''' mimicking lipoma. A homogeneous hypoechoic mass presenting with the same appearance of lipoma. It was clinically distinguished as having rapid growth.<ref name="MakTzeng2012"/> It demonstrates the inaccuracy of ultrasound to properly distinguish lipomas from liposarcomas, so this case should have had MRI as a first investigation.
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File:Scrotal ultrasonography of liposarcoma mimicking a lipoma.jpg|'''Liposarcoma''' mimicking lipoma. A homogeneous hypoechoic mass presenting with the same appearance of lipoma. It was clinically distinguished as having rapid growth.<ref name="MakTzeng2012"/>  
 
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The latter case demonstrates the inaccuracy of ultrasound to properly distinguish lipomas from liposarcomas, so this case should have had MRI as a first investigation.
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Revision as of 12:33, 6 February 2019

Author: Mikael Häggström [notes 1]

Planning

Choice of modality

  • Ultrasonography of superficial soft tissues is the investigation of choice in stable superficial soft tissue masses of unknown origin, at least in flexion surfaces of large joints (groin, popliteal fossa, armpit and cubital fossa).
  • MRI is the imaging modality of choice in suspected lipoma, with superior sensitivity of distinguishing it from liposarcoma as well as mapping the surrounding anatomy.[1]

Evaluation

Possible findings:

Lymph nodes

Lipoma/Liposarcoma

The latter case demonstrates the inaccuracy of ultrasound to properly distinguish lipomas from liposarcomas, so this case should have had MRI as a first investigation.

Notes

  1. For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Radlines:Authorship for details.

References

  1. Rohit Sharma and A.Prof Frank Gaillard et al.. Lipoma. Radiopaedia. Retrieved on 2018-09-27.
  2. 2.0 2.1 Dialani, V.; James, D. F.; Slanetz, P. J. (2014). "A practical approach to imaging the axilla ". Insights into Imaging 6 (2): 217–229. doi:10.1007/s13244-014-0367-8. ISSN 1869-4101.  Creative Commons attribution license
  3. Chernev I, Tingey S. (2013). "Thenar intramuscular lipoma: A case report. ". J Med Cases 4 (10): 676-8. 
  4. 4.0 4.1 Content originally copied from: Mak, Chee-Wai; Tzeng, Wen-Sheng (2012). Sonography of the Scrotum . doi:10.5772/27586.  from Kerry Thoirs. Sonography. ISBN: 978-953-307-947-9, Published: February 3, 2012, under the CC-BY-3.0 license.