system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 48-year-old man comes to the physician because of a skin lesion on his nose and in his mouth. The lesions have been gradually increasing in size and are not painful or pruritic. Two months ago, he was treated for esophageal candidiasis. Physical examination shows one pinkish-brown papule on the right wing of the nose and two similar nodular lesions on the hard palate and buccal mucosa. A biopsy of one of the lesions shows spindle-shaped endothelial cells and infiltration of lymphocytes, plasma cells, and macrophages. Which of the following is the most likely causal organism of this patient's condition?
assistant
Human herpes virus 8