PMC8222604_01
Electronic nasopharyngoscopy showed a red-pink smooth mass with an indistinct base, which almost completely blocked the posterior nostrils (black arrow) bilaterally (A,B). Sinus computed tomography showed a mass with irregular soft tissue density in the nasopharynx (red arrow) (C-E). Sinus magnetic resonance imaging revealed that the nasopharyngeal mass had irregular mixed signals (F-H).
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F1
This revealed a red-pink, smooth nasopharyngeal mass with an unclear base that almost blocked both posterior nostrils (Figures 1A,B). Sinus three-dimensional computed tomography (CT) revealed a mass of irregular soft-tissue density in the nasopharynx, of dimensions ca. 2.5 x 1.2 cm, with a dark internal fluid (Figures 1C-E). Nasal breathing was completely blocked; no connection was evident between the mass and the intracranial space (Figures 1F-H).
Electronic nasopharyngoscopy 1 week after surgery showed that the operation area recovered well and there was good nasopharyngeal patency (A). Post-operative pathological examination was performed under a 100 x lens (B). At 1 year post-operatively, electronic nasopharyngoscopy showed no recurrence of the mass, only nasopharynx adenoid hyperplasia (C). At the 3-year follow-up, there was no recurrence of the mass, but obvious adenoidal hyperplasia (D). Sinus magnetic resonance imaging showed no recurrence of the mass and no intracranial abnormality, only adenoidal hyperplasia (red arrow) (E,F).
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F2
Pathology revealed that the mass was composed of neoplastic astrocytes and filamentous glial cells, with internal ganglion cells (Figure 2B).