A congenital accessory skin appendage of the nasal columella: a rare anatomical variation

Abstract

An accessory skin appendage of the nasal columella is among of the rare congenital malformation of the nose. Still there are few cases reported in the literature. Here, we present a case of a patient with a congenital polypoid mass on the nasal columella. The lesion was unilateral and appeared as a skin- colored tag. The location was upper lateral border of the columella. The location corresponds to the migration route of the medial nasal process during week 4-7 of embryological development. However, there is few proposed pathophysiology or distribution of accessory skin appendages of the nasal columella in the literature. We present a simple, comprehensive pathophysiology based on embryological development. We present a case of a protruding skin appendage of the nasal columella. The lesions were present from birth with no familiar history of similar conditions. The lesions were located on the upper lateral borders of the nasal columella and underwent surgical excision under general anesthesia with no signs of recurrence after 9 months of follow up. Any default occurs during the migration process of embryonic development may result in congenital anomaly. If an obstacle or injury occurs during the medial migration of the medial nasal process, congenital remnant tissue may remain along the migration route, resulting in an accessory skin appendage of the nasal columella.