PMC7471784_01
Preoperative CT scan showing migrating frontal sinus stent.
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The CT report showed a migrating frontal stent that pushes against the left lamina papyracea (Figure 1).
Intraoperative granulation tissue.
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III procedure performed by the senior author (I.R.H.). Intraoperatively, granulation tissue was forming around the stent, which was removed, and the specimen was sent for histopathological analysis (Figures 2 and 3).
Intraoperative stent removal.
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III procedure performed by the senior author (I.R.H.). Intraoperatively, granulation tissue was forming around the stent, which was removed, and the specimen was sent for histopathological analysis (Figures 2 and 3).
Low-power view showing granulomas and giant cells.
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The latter was initially interpreted as possible granulomatous invasive fungal sinusitis, but then proved to be foreign body granulation tissue in reaction to the stent (Figure 4).