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The American Society of Dermatopathology
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Case Study of the Month
View case study archive
Interactive Case Study - September 2018
62-year-old with patches on the knee
Jyoti P. Kapil, MD; Daniel Wimmer, DO
Question 1:
62-year-old Caucasian woman with a 10-year history of erythematous, asymptomatic tan patches on the knee presenting after a knee replacement without progression. Patient has history of rheumatoid arthritis.
Click this image to view the virtual slide
Figure 1.
Figure 2. 10x
Figure 3. 20x A
Figure 4. 20x B
Figure 5. 40x
Figure 6. CD68
What is the best diagnosis?
A.
Intravascular histiocytosis
B.
Intravascular lymphoma
C.
Kaposi Sarcoma
D.
Livedo reticularis
E.
Reactive angioendotheliomatosis