fig1
![Medially based de-epithelialized flap for nasal base narrowing and nostril sill augmentation in a cleft lip nasal deformity](https://image.oaes.cc/c94d84a9-0ac8-440a-9f59-329830862900/1692.fig.1.png)
Figure 1. A perpendicular section of the nostril sill. Two arrowheads indicate the span of the nostril sill. A: Gross specimen; B: Histology with Masson trichrome stain, bar indicates 1.5 mm. Note the thick dermis and the obliquely running depressor septi nasi muscle (D) comprising the nostril sill. O: orbicularis oris muscle; P: periosteum; G: nasal glands