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 25-year-old man presents with a nodule on his right foot. He says that he first noticed the nodule last week. It has not undergone any change in size and color. He denies any history of trauma or fever. Past medical history is significant for HIV, diagnosed 6 years ago. He is currently not on antiretroviral therapy. His last CD4+ T cell count was 0.19 x 109/L. He is afebrile, and his vital signs are within normal limits. On physical examination, there is a 3 cm x 4 cm nodule on the right foot, tan brown in color, non-tender, and covered with a fine scale. A biopsy of the nodule is performed and histopathological analysis reveals the proliferation of blood vessels with overgrown endothelial cells. Histological staining of the biopsy tissue reveals gram-negative bacilli. Which of the following is the best course of treatment for this patient?
assistant
Erythromycin