Question 1:
Clinical history: A 79-year-old male patient presented for evaluation of a “lump” located on his right upper inner thigh. The “lump” had been there for about 10 years; however, it had increased in size recently. The gross appearance and the histology are shown below (Fig. 1-6)
Figure 1 Figure 2 Figure 3
Figure 4 Figure 5 Figure 6
Which of the following is the best diagnosis?