Question:hard
CT image of left maxilla with a history of allergic rhinitis. Identify the finding:
CT image of left maxilla with a history of allergic rhinitis. Identify the finding:
Show Hint
Allergic fungal sinusitis - central hyperdense mucin, peripheral hypodense mucosa.
Updated On: Jun 23, 2026
- Ground glass appearance
- Double densities
- Honey comb
- Onion Peel Appearance
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: A patient with allergic rhinitis showing expansile sinus opacification on CT is the classic setting for allergic fungal rhinosinusitis.
Step 2: The inspissated allergic mucin within the sinus is centrally hyperattenuating (heavy metals, calcium, dense secretions) while the surrounding inflamed mucosa stays hypodense.
Step 3: This combination of a dense centre against a less-dense periphery is described radiologically as a double-density pattern, making (b) the answer.
Step 4: The remaining descriptors belong to other entities (fibrous dysplasia, cystic lung disease, Ewing sarcoma) and do not fit this CT.
\[\boxed{\text{Double densities}}\]
Step 2: The inspissated allergic mucin within the sinus is centrally hyperattenuating (heavy metals, calcium, dense secretions) while the surrounding inflamed mucosa stays hypodense.
Step 3: This combination of a dense centre against a less-dense periphery is described radiologically as a double-density pattern, making (b) the answer.
Step 4: The remaining descriptors belong to other entities (fibrous dysplasia, cystic lung disease, Ewing sarcoma) and do not fit this CT.
\[\boxed{\text{Double densities}}\]
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