PMC6415314_01
Sagittal T1-weighted MR image showing a well-defined enhancing tumour (arrow) completely filling the nasopharynx.
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fig1
Contrast magnetic resonance (MR) imaging (Figure 1) demonstrated a uniformly enhancing pedunculated polypoid mass that displaced the soft palate inferiorly, but without evidence of skull base involvement.
Intraoperative 0-degree endoscope view showing pleomorphic adenoma resection using the coblator device. NS, nasal septum; PA, pleomorphic adenoma; CO, coblator; IT, inferior turbinate.
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fig2
The tumour's pedicle was identified endoscopically as originating from the left lateral nasopharynx and, using coblation, was carefully dissected en bloc from its mucosal attachment (Figure 2) leaving the wound bed to heal by secondary intention.
Clinical photograph of the unfixed surgical specimen (scale: cm).
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fig3
Finally, the specimen (Figure 3) was delivered transorally with forceps.
Photomicrograph showing pleomorphic adenoma histology (hematoxylin and eosin).
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fig4
Microscopic sections (Figure 4) showed a circumscribed non-encapsulated tumour with no evidence of perineural or lymphovascular invasion.