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The American Society of Dermatopathology
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Case Study of the Month
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Interactive Case Study - May 2017
Enlarging right thigh mass in a morbidly obese patient
Bethany Rohr, MD; George Lin, MD, PhD
Question 1:
A 61-year-old morbidly obese male presented with a four-year history of a slowly enlarging, asymptomatic, right thigh mass. Excision showed the following histopathology (Figures 1- 5).
Click on this image to view the virtual slide.
Figure 1. 20x
Figure 2. 20x
Figure 3. 20x
Figure 4. 200x
Figure 5. 400x
Which of the following is the best diagnosis?
A.
Massive localized lymphedema (MLL)
B.
Atypical lipomatous tumor/well-differentiated liposarcoma (ALT/WDLS)
C.
Lipoma
D.
Angiosarcoma
E.
Post-traumatic pseudolipoma