case_images: PMC5498902_01
case_images: An MRI image shows a tumor (arrow) attached to the left inferior nasal turbinate.
case_images: CRIOT2017-9361612.001.jpg
case_images: PMC5498902_01_CRIOT2017-9361612.001.jpg
case_images: fig1
case_images: Magnetic resonance imaging (MRI) revealed a solitary tumor restricted to the left nasal cavity (Figure 1), but an endoscopic examination revealed that a pigmented lesion extended from the tumor and into the nasopharynx. Metastasis to the cervical lymph nodes or other organs was not detected on computed tomography (CT).
case_images: PMC5498902_02
case_images: An endoscopic examination image shows a tumor (arrow) in the left nasal cavity.
case_images: CRIOT2017-9361612.002.jpg
case_images: PMC5498902_02_CRIOT2017-9361612.002.jpg
case_images: fig2
case_images: Nasal examination showed a dark-colored tumor in the left nasal cavity (Figure 2).
case_images: Recurrent MM tumor (arrow) in the right nasal cavity.
case_images: CRIOT2017-9361612.003.jpg
case_images: PMC5498902_02_CRIOT2017-9361612.003.jpg
case_images: fig3
case_images: The patient underwent regular examinations after the treatment, and a new MM lesion was detected in the right nasal cavity 10 months later (Figure 3).
case_images: An intracranial invasive lesion (arrow) is shown on this MRI image.
case_images: CRIOT2017-9361612.004.jpg
case_images: PMC5498902_02_CRIOT2017-9361612.004.jpg
case_images: fig4
case_images: The patient was initially reluctant to undergo treatment, and endoscopic surgery was only performed 4 months later, at which time the tumor was revealed to be nonexcisable because of intracranial invasion (Figure 4).