Angiolipoma of the nasal alar base: A case report

Figure 1 Pre-operative frontal and basal view.

Figure 2 Computed tomography imaging. A: Axial view; B: Coronal view; C: Sagittal view.

Figure 3 Intraoperative photos show.

Figure 4 One year post-operative frontal and basal view show.

Figure 5 Histopathologic findings of the nasal alar base mass. A: The tumor comprises a lot of blood vessels, adipocytes, and entrapped skeletal muscle fibers (asterisks); B: Higher magnification shows thin- and thick-walled blood vessels (arrows) and mature adipocytes. No cytological atypica or mitosis. Entrapped skeletal muscle fibers (asterisks) are noted. Hematoxylin and eosin staining. Scale bars measure A: 200 μm; B: 100 μm. AD: Adipocytes.

Figure 6 Immunohistochemical staining of the nasal alar base mass. A: Most of the vascular wall (arrows) shows positive immunoreactivity for the alpha-smooth muscle actin. Entrapped skeletal muscle fibers (asterisks) show negative immunoreactivity; B: Most of the small blood vessels show negative immunoreactivity for desmin, but large sized blood vessels (arrows) and entrapped skeletal muscle fibers (asterisks) show positive immunoreactivity. Scale bars measure 100 μm.