**Core Concept**
Paranasal sinusitis refers to inflammation of the paranasal sinuses, which are air-filled spaces within the bones surrounding the nasal cavity. Complications of paranasal sinusitis can arise due to the spread of infection to adjacent structures, including the orbit, central nervous system, and intracranial structures.

**Why the Correct Answer is Right**
The correct answer is a complication that is not commonly associated with paranasal sinusitis. Complications of paranasal sinusitis can include orbital cellulitis, cavernous sinus thrombosis, meningitis, and epidural abscess. These complications occur due to the spread of infection through the venous sinuses or direct spread to adjacent structures. The frontal sinus is most commonly involved in complications due to its proximity to the orbit and intracranial structures.

**Why Each Wrong Option is Incorrect**
**Option A:** Orbital cellulitis is a recognized complication of paranasal sinusitis, particularly involving the frontal sinus. It occurs due to the spread of infection through the orbital veins.
**Option B:** Cavernous sinus thrombosis is also a known complication of paranasal sinusitis, typically involving the frontal or ethmoid sinuses. This occurs due to the spread of infection through the venous sinuses.
**Option C:** Meningitis is a potential complication of paranasal sinusitis, usually involving the frontal or ethmoid sinuses. This occurs due to the spread of infection through the venous sinuses or direct spread to the meninges.

**Clinical Pearl / High-Yield Fact**
The most common sites of involvement in complications of paranasal sinusitis are the frontal and ethmoid sinuses, due to their proximity to the orbit and intracranial structures.

**Correct Answer: D.**