Case 194

 A sixty two nine-year-old male presented in our hospital for hoping surgical resection of subcutaneous mass in the middle-left abdominal wall. He realized the presence of the mass sized a golf-ball three months before. When he touched the mass, he found it movable and unpainful. Thereafter, it was gradually growing to approximately 5 cm in size. The skin surface of the mass turned purple redness. He happened to take abdomen MRI three months before for investigating liver mass which demonstrated this subcutaneous abdominal wall mass (Figs. 1 -3).

What is your diagnosis on abdomen MRI?

1.　Lipoma

2.　Hemangioma

3.　Undifferentiated unclassified sarcoma

4.　Dermatofibrosarcoma protuberans

5.　Malignant lymphoma

answer

2020.6.17