PMC3488387_01
Computed tomography (CT scan) of the orbits shows complete opacity of the left frontal sinus with anterior and inferior breach of the sinus.
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fig1
The opacification of the left frontal sinus appeared to be due to dense material without contrast enhancement which extended into the orbit through anterolateral (20 x 30 mm) and inferior (13 mm) breach of the sinus (Figure 1). Through Lynch-Howarth procedure, the frontal sinus was opened and the content was removed (Figure 2).
Intraoperative photograph shows the opening of the frontal sinus with Lynch-Howarth procedure.
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fig2
The opacification of the left frontal sinus appeared to be due to dense material without contrast enhancement which extended into the orbit through anterolateral (20 x 30 mm) and inferior (13 mm) breach of the sinus (Figure 1). Through Lynch-Howarth procedure, the frontal sinus was opened and the content was removed (Figure 2).
A histology slide of the cholesterol granuloma of the frontal sinus reported here. The fibrous connective tissue contains the characteristic "needles" of cholesterol surrounded by multinucleated foreign body giant cells (hematoxylin-eosin, original magnification x50).
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fig3
The definite diagnosis is made by histology (Figure 3).