[TREATMENT OBSERVATION OF NASAL TIP DEFECTS RECONSTRUCTED BY BILOBED FLAPS AFTER GAINT NEVI EXCISION]

To discuss a reliable and aesthetic surgery method for the reconstruction of large defects on the top of nose after giant nevi resection.

Between January 2011 and June 2015, 46 cases of nasal tip defects caused by giant nevi resection were treated. Of 46 cases, 22 were male and 24 were female, aged 15-59 years (median, 28 years). The right ala nasi was involved in 28 cases, the apex nasi in 8 cases, and the left ala nasi in 10 cases. The diameters of nevi were from 8 to 12 mm (mean, 9.75 mm); no alar cartilage was invaded. Hair growth was seen in 14 cases. The duration of nasal nevi was from 3 years to 49 years (mean, 9.8 years). There were 9 recurrent patients who received laser therapy before surgery. The defects sizes after excision were from 10 mm×10 mm to 14 mm×14 mm. The bilobed flaps were used for one-stage reconstruction, which sizes were from 11 mm×10 mm to 15 mm×14 mm and from 10 mm×10 mm to 15 mm×14 mm.

All the incisions healed by first intention, and the flaps survived. No complication of intracranial hemorrhage or subdural hemorrhage occurred. The patients were followed up 6 months to 5 years (mean, 18 months). The appearance of nasal tip and nasolabial fold was satisfactory, and no recurrence was found during follow-up.

One-stage bilobed flap reconstruction for nasal tip defects after giant nevus resection is one of the effective, safe, and aesthetic surgery methods.