case_images: PMC11497389_01
case_images: CT scan (A), T1 (B), contrast-enhanced T1 (C), and T2 (D) MRI show well demarcated ovoid benign mass lesion, measuring 14 x 12 mm in size at the left nasal dorsum with inhomogeneous hyperintensity in T2 image.
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case_images: Tomography (CT) and Magnetic Resonance Imaging (MRI) of the paranasal sinuses revealed a well-defined, T2-hyperintense benign mass lesion measuring 12 mm in the left supratip area, with marginal enhancement on contrast-enhanced T1 images. There were no abnormal findings in sinuses and nasal cavity (Fig. 1).
case_images: Clinical and surgical photos. (A) The left nasal dorsum area was bulged. (B) A round mass was located above the junctional area of the left lateral crus of the alar and upper lateral cartilage. (C) Depressed left lateral crus (arrow) of the alar was observed after mass removal.
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case_images: A well-encapsulated, reddish, rubbery mass measuring 14 x 12 mm was located above the junctional area of the left lateral crus of the alar and upper lateral cartilage (Fig. 2).
case_images: Histopathological findings. (A) Hematoxylin eosin stain showed multiple non-dilated vascular structures (arrows) with absent muscular layer and dense fibro-collagenous lesions without atypical cells (x200). (B) Immunohistochemical stain for CD34 demonstrated marked hypervascularity in the dense fibrous stroma (x100).
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case_images: These findings were compatible with a diagnosis of angiofibroma (Fig. 3).
case_images: Post-operative 1-year CT scan (A) and clinical photo (B) revealed no evidence of recurrence or residual lesion.
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case_images: A follow-up CT scan 12 months after surgical excision showed no signs of recurrence, with intact alar and upper lateral cartilage (Fig. 4).