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
An elderly diabetic has left sided orbital cellulites, CT scan of paranasal sinuses shows evidence of left maxillay sinusitis. Gram stained smear of the orbital exudates shows irregularly branching septate hyphae. The following is the most likely aetiological agent -
assistant
The correct answer is  None