Interactive Case Study - May 2013

Question 1:

An 8-year-old boy presented with an enlarging subcutaneous nodule on his right upper arm. The histologic findings are presented in the figures below.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Which of the following is the most likely diagnosis?

A.  Nodular Kaposi sarcoma

B.  Angiomatoid fibrous histiocytoma

C.  Aneurysmal benign fibrous histiocytoma

D.  Spindle cell hemangioma

E.  Epithelioid sarcoma metastasis in lymph node