case_images: PMC8536460_01
case_images: Cervical computed tomography (CT) at the initial visit (a, b) and when glossopharyngeal and vagus nerve paralysis emerged (c, d). CT taken after improvement of symptoms (e, f). The upper panels are contrast-enhanced images of the soft tissue of the nasopharynx (a, c, e). The lower panels are contrast-enhanced images of the bony structure of the extra skull base (b, d, f). The development of diffuse enhancing mucosal irregularity in the nasopharynx (arrow) is shown. (d) The bony erosion of the external skull base (arrow head). (f) The improvement of bony erosion (arrow head).
case_images: CRIOT2021-7500273.001.jpg
case_images: PMC8536460_01_CRIOT2021-7500273.001.jpg
case_images: fig1
case_images: Cervical computed tomography (CT) revealed neither a mass shadow in the nasopharynx nor cervical lymphadenopathy (Figure 1(a)). No evidence of bony destruction or intracranial extension was observed (Figure 1(b)). CT revealed a diffuse enhancing mucosal irregularity in the right nasopharynx (Figure 1(c)) and bony erosion of the external skull base (Figure 1(d)). On day 217, improvement of the bony erosion of the external skull base was confirmed (Figures 1(e) and 1(f)).