Abstract: 【Abstract】 Objective To investigate clinical efficacy of tunneled subcutaneous pedicle flaps in the repair of ipsilateral nasal alar defects. Methods A total of 20 patients with nasal alar defects after excision of basal cell carcinoma, which were repaired with ipsilateral tunneled subcutaneous pedicle flaps, were retrospectively collected from January 2018 to January 2020. There were 11 male patients and 9 female patients, with an average age of 60.6 years （range, 48 - 76 years）. According to clinical manifestations, the basal cell carcinoma lesions could be classified into 3 types: nodular-ulcerative type （13 cases）, superficial type （4 cases） and pigmented type （3 cases）, and the skin lesions varied from 0.4 cm × 0.5 cm to 0.9 cm × 1.1 cm in size. All the patients received extended surgical resection of basal cell carcinoma, and nasal alar defects were repaired with tunneled subcutaneous pedicle flaps, with the size of flaps ranging from 0.7 cm × 0.8 cm to 1.2 cm × 1.4 cm. Results All flaps survived successfully, the nasal alar defects were completely repaired, and all wounds healed primarily. During the postoperative follow-up of 6 - 24 months, neither recurrence of tumors nor obvious scar hyperplasia occurred on the nasal ala, and nasal morphology and appearance were favorable. Conclusion The tunneled subcutaneous pedicle flap can be used for the repair of ipsilateral nasal alar defects following excision of tumors or other lesions, resulting in favorable therapeutic outcomes and aesthetic appearance.

Key words: Neoplasms, basal cell, Tunneled subcutaneous pedicle flaps, Defect of nasal ala