NEET PG Medical – 2018 – Question – 93
Which fungus is most commonly associated with orbital cellulitis in patients with diabetic ketoacidosis.
a) Candida
b) Mucor
c) Aspergillus
d) Rhizopus
Correct Answer – C
Answer: C. Aspergillus
Orbital cellulitis term is reserved for infections behind the orbital septum which may or may not spill over to lids. Bacterial OC is more common in children and fulminant infection (& ischemic infarction) with Mucor or Aspergillus typically affects patients with diabetes (esp. ketoacidosis) and immunosuppression. Presentation is Extensive swelling of lids with chemosis often obscure proptosis (i.e. most commonly lateral & downwards). Proptosis with impaired mobility resulting in diplopia Pain is severe, increased by movement of eye or pressure Unilateral, tender, warm & red periorbital edema, painful ophthalmoplegia.
