Practice questions I Tumors of vessels
Practice questions I Tumors of vessels © Jun Wang, MD, PhD 1. A 2-year-old girl presents with a rapidly growing reddish mass on her left face, covering eye-lid, left side of nose, and upper lip. The mass has small foci of ulceration. Purulent exudates are seen. Microbiology culture of the purulent exudates grows non-hemolytic white raised colonies gram-positive, coagulase-negative cocci that form clusters. These bacteria are sensitive to novobiocin. Biopsy of the lesion reveals packed small channel-like spaces lined by benign flat epithelial cells that is positive for CD31. Scattered neutrophilic and lymphoplasmacytic infiltration is seen. What is the most likely diagnosis? A. Angiosarcoma B. Bacillary angiomatosis C. Capillary hemangioma D. Hemangioblastoma E. Kaposi sarcoma 2. A 1-year-old boy presents with an ulcerated lesion on his right ear. The lesion is a 2.5 cm well-demarcated, red nodule with peripheral telangiectasia and central ulceration. No other abn...