In pediatric orbital cellulitis, which sinus is most commonly involved?

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Study for the NBEO Ocular Disease Part 1 Test. Use flashcards and multiple choice questions, each with hints and explanations, to prepare for your exam! Get ready for your success!

Multiple Choice

In pediatric orbital cellulitis, which sinus is most commonly involved?

Explanation:
In pediatric orbital cellulitis, the infection most often originates from the ethmoid sinuses because they form the medial wall of the orbit and are separated from orbital contents by only a very thin barrier (the lamina papyracea). This close adjacency allows infection to spread easily from the ethmoid air cells into the orbital tissues, which is why ethmoid sinusitis is the common source in children. Ethmoid sinuses are present and pneumatized early in life, making them a frequent culprit, whereas frontal and sphenoid sinuses are less developed in kids and the maxillary sinus lies more laterally, making them less likely sources of direct orbital spread.

In pediatric orbital cellulitis, the infection most often originates from the ethmoid sinuses because they form the medial wall of the orbit and are separated from orbital contents by only a very thin barrier (the lamina papyracea). This close adjacency allows infection to spread easily from the ethmoid air cells into the orbital tissues, which is why ethmoid sinusitis is the common source in children. Ethmoid sinuses are present and pneumatized early in life, making them a frequent culprit, whereas frontal and sphenoid sinuses are less developed in kids and the maxillary sinus lies more laterally, making them less likely sources of direct orbital spread.

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