Complications of acute sinusitis -a) Orbital cellulitisb) Pott’s puffy tumour c) Conjunctival chemosis d) Subdural abscess
**Core Concept**
Acute sinusitis can lead to various complications due to the spread of infection to surrounding structures, including the orbit, brain, and meninges. The complications arise from the proximity of the sinuses to these critical areas and the potential for bacterial dissemination through direct extension or hematogenous spread.
**Why the Correct Answer is Right**
Pott's puffy tumor is a complication of frontal sinusitis, characterized by subperiosteal abscess formation and bone erosion, often resulting from direct spread of infection from the frontal sinus to the adjacent frontal bone. This condition is a medical emergency that requires prompt treatment to prevent further complications, such as cerebral abscess or meningitis. The frontal sinus is particularly susceptible to this complication due to its thin bony walls and proximity to the brain.
**Why Each Wrong Option is Incorrect**
* **Option A:** Orbital cellulitis is a potential complication of acute sinusitis, but it is not the most severe or specific complication listed. Orbital cellulitis typically presents with proptosis, eyelid swelling, and decreased vision, but it is not as directly related to the frontal sinus as Pott's puffy tumor.
* **Option C:** Conjunctival chemosis is a sign of orbital involvement, but it is not a specific complication of acute sinusitis. Chemosis can occur in various conditions, including orbital cellulitis, but it is not as directly related to the frontal sinus as Pott's puffy tumor.
* **Option D:** Subdural abscess is a potential complication of acute sinusitis, but it is not as specific or directly related to the frontal sinus as Pott's puffy tumor. Subdural abscess typically presents with headache, fever, and altered mental status, but it is not as uniquely associated with frontal sinusitis as Pott's puffy tumor.
**Clinical Pearl / High-Yield Fact**
When suspecting complications of acute sinusitis, particularly in the frontal sinus, it is essential to consider Pott's puffy tumor as a potential diagnosis, especially in patients with frontal sinus tenderness, subperiosteal abscess formation, and bone erosion.
**Correct Answer:** B. Pott's puffy tumor