Liposarcoma



Liposarcoma


Steven S. Shen, MD, PhD

Jae Y. Ro, MD, PhD










Bulky paratesticular mass with multilobulation due to fibrous bands image and golden yellow appearance suggests an adipocytic tumor. Uninvolved testis image is pushed to 1 side.






Lipoma-like WDL shows mature adipocytes of variable size and shape with fibrous bands image and scattered atypical stromal cells image. Typical lipoblasts are not seen in this image.


TERMINOLOGY


Synonyms



  • Atypical lipomatous tumor (ALT), well-differentiated liposarcoma (WDL)


Definitions



  • Malignant neoplasm showing adipocytic differentiation


CLINICAL ISSUES


Epidemiology



  • Incidence



    • Rare, but is most common sarcoma in paratesticular tissue in adults


  • Age



    • Range: 41-87 years old (average: 63 years old)


Presentation



  • Large scrotal mass


  • Usually involves spermatic cord, testicular tunica, or epididymis


Treatment



  • Surgical approaches



    • Surgical resection is usually curative


Prognosis



  • Favorable with complete excision


  • Unfavorable with dedifferentiation or metastasis


  • Local recurrence may occur


IMAGE FINDINGS


General Features



  • Large hyperechoic mass by ultrasonography


  • CT and MR are more specific as they may detect fat component

Jul 7, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Liposarcoma

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