case_images: PMC8068538_01
case_images: (a, b) Significant swelling of the upper and lower lips.
case_images: CRID2021-6648729.001.jpg
case_images: PMC8068538_01_CRID2021-6648729.001.jpg
case_images: fig1
case_images: On extraoral examination, the upper and lower lips were swollen (Figure 1).
case_images: Aphthous ulcers on the mucous membrane of the lips.
case_images: CRID2021-6648729.002.jpg
case_images: PMC8068538_01_CRID2021-6648729.002.jpg
case_images: fig2
case_images: Intraoral examination revealed several carious teeth and numerous painful aphthae in the mucous membrane of the lips (Figure 2).
case_images: The mucous membrane of the lip with resolution of aphthous ulcers.
case_images: CRID2021-6648729.003.jpg
case_images: PMC8068538_01_CRID2021-6648729.003.jpg
case_images: fig3
case_images: In this reported case, aphthous ulcers in the mucous membrane cleared up within two weeks (Figure 3).