PSEUDO-KAPOSIS SARCOMA (MALI TYPE)

A 75-year-old man presented with lesions on his right leg and on the d orsum of the penis, which had appeared 5 years ago following long dist ance travel. His right leg was swollen, and there was a dark-violet-co lored, slightly elevated lesion extending to the thigh and penis (Fig. 1). Histologic examination revealed thickening of the arteriolar wall s and diffuse proliferation of the vascular structures surrounding the arterioles and dissecting the dermal collagen fibers (Fig. 2). Immuno histochemical staining for Factor VIII R-A reacted positively with art eriolar endothelium, but was negative on thin-walled vascular spaces ( Fig. 3). Femoral angiography showed multiple fine arteriovenous (A-V) shunts especially at the one-third distal lower region of the right le g.