Pinwheel Flap as an Option to Reconstruct a Nasal Defect: A Series of Two Cases

Introduction: Basal cell carcinoma (BCC) is the most common skin cancer. When located in the nasal region and the resulting defect is greater than 3 centimeters becomes challenging for the dermatological surgeon. The pinwheel technique (PWT) is a rotating flap to correct defects, mainly on the scalp, but we use it to close two nasal defects after CBC excision. Objectives and methods: We report two cases of BCCs located in the nasal region and reconstructed with a pinwheel flap. Results and conclusions: In both cases, the results were satisfactory, both for cosmetics and functionality.


Introduction
Basal cell carcinoma (BCC) is the most common type of skin câncer [1]. Sometimes, the complete excision of this type of tumor requires a flap to close the resulting defect [1,2]. As for the reconstruction of larger defects, greater than 30 millimeters (mm), in the nasal region, still become more challenging for the dermatological surgeon, due to local characteristics such as rigid structure and little mobility [3].
Pinwheel technique (PWT) is a flap with rotation flaps created to correct circular defects in the scalp, a place that has limited skin mobility [4,5]. Some surgeons have also used PWT for the temporal region without pilification [4].
We report two cases of patients with nasal BCC, in which we chose the PWT for reconstruction, with satisfactory aesthetic results. The purpose of the case report is to demonstrate an option of the technique to correct wide defects in the nasal region (not yet described for the region), with easy execution and a good level of patient satisfaction.

Methods
Two patients with BCC in the nasal region were treated: Patient 1: Female patient, 81-years-old, phototype III, from Londrina (PR), with erythematous plaque, 24 mm × 21 mm, on the lateral dorsum to the right of the nasal region, compatible with BCC by biopsy. The lesion was excised with safety margins

Case Report
Abstract Introduction: Basal cell carcinoma (BCC) is the most common skin cancer. When located in the nasal region and the resulting defect is greater than 3 centimeters becomes challenging for the dermatological surgeon. The pinwheel technique (PWT) is a rotating flap to correct defects, mainly on the scalp, but we use it to close two nasal defects after CBC excision.

Objectives and methods:
We report two cases of BCCs located in the nasal region and reconstructed with a pinwheel flap.

Results and conclusions:
In both cases, the results were satisfactory, both for cosmetics and functionality.

Discussion
Several techniques are used for reconstruction of defects in the nasal region, such as primary closure, AT flaps, glabel-

Authors Declaration
Work carried out by the dermatology service of the University Hospital of Northern Paraná -State University of Londrina, Brazil.

Interest Conflict
None.

Financial Support
None. lar advancement, island advancement, glabellar rotation, bilobed, rhomboid and grafting [1,3,6]. All proposals aim to produce good functionality and a great cosmetic result, in addition to tumor resolution.
In the present cases, primary closings were not possible. We chose flaps instead of grafts, aiming at better aesthetic results. But due to the size of the defects, the cases have become even more challenging.
Micrographic surgery (Mohs) is widely recommended to avoid major removal of healthy skin and to avoid large defects. But surgery with safety margins is still well accepted [7]. Our service does not have a surgeon specialized in Mohs and, therefore, it was chosen for excesses with predetermined margins.
The reason for not having a description, so far, of PWT in the nasal region, perhaps is due to the cosmetic subunits of the region, which is why the multiple rotation flaps could, supposedly, mix these subunits resulting in an inadequate cosmetic.
The first flap of the flap was not a simple rotation, but a glabellar rotation. This execution allows greater coverage of the defect. The second flap, respecting the clockwise direction, uses a rotation of the left alar nasal sulcus. The third flap, a rotation of the right nasal sulcus. The fourth flap, a rotation of the right nasofacial sulcus. Most scars were hidden in the natural sulcus.
Pinwheel technique (PWT), proposed by the present authors to solve wide defects in the nasal region, is valid. The site has limited mobility of the adjacent skin and the creation of several tabs with their corresponding cosmetic units leaves the final result acceptable and functional.

Conclusion
The use of PWT can be a good option for the resolution of large defects secondary to the excision of cutaneous tumors in the nasal region.