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OrthoVellum

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Oncology
intermediate
X-Type

Lipoma and Atypical Lipomatous Tumors

Soft Tissue Tumors

A 55-year-old male presents with a slowly enlarging mass in his posterior thigh noticed over 18 months. Examination reveals a 12cm soft, non-tender, deep mass. MRI shows a predominantly fatty mass with thin internal septations and a small nodular non-fatty component. Regarding lipoma and lipomatous tumors:

Mark each as TRUE or FALSE

A

Simple lipomas are the most common soft tissue tumor in adults; they are composed of mature adipocyt...

B

Features concerning for atypical lipomatous tumor (ALT) or well-differentiated liposarcoma (WDLS) in...

C

Atypical lipomatous tumor (ALT) and well-differentiated liposarcoma (WDLS) are biologically differen...

D

The distinction between ALT and WDLS is based on anatomical location: tumors in surgically amenable ...

E

Intramuscular lipoma is a deep lipoma that infiltrates between muscle fibers; it may recur locally a...

Answer the questions to see explanations

Click T (True) or F (False) for each option