This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacterial infection, Subject name: Medicine
[{'content': 'A 45 year-old HIV-positive male presented with multiple red hemangioma-like lesions. Biopsy specimens show clusters of bacillithat stain positively with the Wahin-Starry stain. Which of the following could be the causative organism? \nSelect and explain. \nA. Baonella quintana, B. HHV8, C. Baonella henslae, D. EBV', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In patients with AIDS , the development of multiple red hemangioma-like lesions points to Bacillary angiomatosis which is caused by Baonella henselae. Bacillary angiomatosis aka Bacillary epithelioid angiomatosis or epithelioid angiomatosis is a disease of severely immunocompromised patients Caused by B. henselae Characterized by neovascular proliferative lesions involving the skin and other organs.Occur primarily in HIV infected persons with CD4+ T cell counts of <100/mL Biopsy specimens show clusters of bacilli that stain positively with the Wahin-Starry stain Disseminated visceral disease is seen primarily in immunocompromised hosts but can occur in immunocompetent individuals Treatment - Erythromycin (500 mg PO qid for 3 months) or Doxycycline (100 mg PO bid for 3 months) B. henselaecauses- Bacillary angiomatosis & cat scratch fever Baonella bacilliformis causes- Oraya fever Baonella quintana causes- Trench fever', 'role': 'assistant'}]