case_images: PMC8170287_01
case_images: Twin A has edema of the labia majora and minora as well as an erythematous,
  moist-appearing sulcus extending from the vaginal introitus to the anterior anus without
  bleeding or discharge. Anus is patent, normally placed, and centered in the
  sphincter.
case_images: 10.1177_2050313X211020222-fig1.jpg
case_images: PMC8170287_01_10.1177_2050313X211020222-fig1.jpg
case_images: fig1-2050313X211020222
case_images: Physical examination in the newborn nursery revealed hypertrophic, erythematous and wet appearing mucosal sulci extending from the posterior vaginal fourchette to the anterior ridge of the anus in both twins (Figures 1 and 2).
case_images: Twin B has edema of the labia majora and minora as well as an erythematous, moist
  appearing, hypertrophic sulcus extending from the vaginal introitus to the anterior anus
  without bleeding or discharge. Anus is patent, normally placed, and centered in the
  sphincter.
case_images: 10.1177_2050313X211020222-fig2.jpg
case_images: PMC8170287_01_10.1177_2050313X211020222-fig2.jpg
case_images: fig2-2050313X211020222
case_images: Physical examination in the newborn nursery revealed hypertrophic, erythematous and wet appearing mucosal sulci extending from the posterior vaginal fourchette to the anterior ridge of the anus in both twins (Figures 1 and 2).