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Bilobed Nasolabial and Rhomboid Flaps for Repair of a Left Nasal Ala Defect Following Basal Cell Cancer Excision


Resection of cutaneous malignancies may result in substantial skin defects. Often, skin grafting is a first-line option for reconstruction of such defects but may be limited by poor cosmetic outcomes and incomplete graft acceptance. Accordingly, skin flaps, tissue rearrangement techniques, and more complex procedures may be needed. This case report presents the successful use of a combination of nasolabial flap and rhomboid flap for reconstruction of a 3 cm × 2 cm-sized left nasal sidewall and ala skin defect left after a Basal Cell Cancer Mohs resection. The flaps were quickly and easily fashioned, did not require any special instruments, and resulted in a good cosmetic outcome. There were no wound complications and the flaps healed completely with excellent contour, texture, thickness, color match, and complete patient satisfaction. This case is an example of technical aspects of successful planning, elevation and inset of a nasolabial flap and rhomboid flap.

Case Overview


The origin of “reconstructive ladder” is believed to be in ancient Egyptian medical texts that were written between 2600 and 2200 BCE. The principle implies that the simplest effective technique should be considered first in reconstruction. The first description of the advancement flap was reported in Rome between 25 BCE and 50 CE1.

Rhomboid flap was first described by Alexander Alexandrovich Limberg in 1928. The traditional design consists of a parallelogram with 2 angles of 120° and 2 angles of 60°. This transpositional flap design consists of skin and subcutaneous tissue rotated around a pivot point into an adjacent defect2,3. This full-thickness cutaneous local flaps typically relies on dermal–subdermal plexus blood supply2,4. The rhomboid flap is popular and can be used to reconstruct defects in most parts of the body. Over the years, several modifications have been reported2,5. Traditionally, rhomboid flaps have been safely used to reconstruct small to moderately sized skin defects6,7.

This report presents a case where a large 3 cm × 2 cm left nasal defect was successfully reconstructed with a combined nasolabial flap and rhomboid flap.

Focused History of the Patient

An 82-year-old female who presents with a several month history of a nonhealing lesion of the left nasal ala.  She had noted that the lesion was progressively getting larger, ulcerated and more noticeable.  She reported a past personal history for a Basal Cell skin cancer, but family history was negative for skin cancer. She noted moderate sun exposure and no sunblock use.  Her past medical history was consistent with hypertension, kidney disease, and atrial fibrillation.  She had undergone prior pacemaker placement.  She was a nonsmoker and current medication included Rivaroxaban, Flecainide, and Diltiazem.  

Physical Exam

On physical examination, she was a Fitzpatrick class 2 skin type, elderly healthy woman with a height of 5 feet 3 inches, weight of 140 pounds, and body mass index of 24.8 kg/m3. The examination of the left nasal ala skin a 2 cm x 1.5 cm diameter diffuse minimally pigmented, scaly, suspicious lesion was noted.  A punch biopsy was performed, and Basal Cell Cancer was diagnosed.  Given the size, location, and clinical findings, I referred the patient for Mohs extirpative excision.  Following that procedure, she returned with negative margins but with a large 3 cm x 2 cm defect of the nasal ala and left inferior nasal sidewall. Mucosa seemed largely intact, and I was unable to assess the viability of the cartilage. 

Options and Rationale for Treatment

My plan was reconstruction with two local flaps: Nasolabial flap from the superior portion of left nasal sidewall and rhomboid flap from left medial cheek and nasolabial fold.  I also prepped the ear for potential donor cartilage graft. The other potential treatment was full-thickness skin graft.

Operative Procedure

Under general anesthesia, a bilobed flap was marked adjacent to and superior to the left nasal sidewall defect.  The mucosa defect was closed with two 5-0 chromic interrupted sutures. The left lower lateral cartilage was explored and was found to be intact. The nasolabial flap was raised at the level of the underlying cartilage and once mobilized was rotated inferiorly and medially to obliterate the anterior portion of the original defect and was inset using a 4-0 Biosyn interrupted sutures and 4-0 nylon interrupted sutures. At this point the anterior portion of the surgical defect was closed and reconstructed. However, the posterior portion was still open and needed a rhomboid flap. Accordingly, a rhomboid flap was marked along the inferior aspect of the defect. Incision was made, the flap was raised at the level of the underlying fascia. The flap was rotated superiorly and medially to obliterate the defect. The flap was inset with 4-0 Biosyn interpret sutures and 4-0 nylon interrupted sutures. At the conclusion of the procedure, both flaps were viable, and the defect was obliterated. Antibiotic ointment and dry dressings were applied. Patient tolerated the procedure well and left the operating room in stable condition. 

In the immediate postoperative period, the incisions were clean, dry, and intact. Both flaps remained viable. The healing was completely uneventful. Long-term follow-up also showed that the flaps healed completely without problems or limitations.


Plastic surgery is a unique specialty where numerous acceptable options may exist for reconstruction of a single defect6. Each reconstruction should be tailored to the unique characteristics of the defect, patient expectations, and surgeon's experience8. The reconstructive ladder framework suggests using first the simplest technique that proves effective1,8. At times, primary closure and skin grafts may lead to distortion, contour deformity, or unacceptable scarring. Such instances, even for small lesions, are more suitable for skin flaps6,9.

An elliptical excision with primary closure may leave a central depression, flat contour and “dog ear” peaks on both corners5,10. To avoid this deformity, an incision length-to-width ratio of 3:1 is required, creating a longer linear scar10,11. Unfortunately, larger portions of healthy skin around the defect are sacrificed, and aesthetic outcomes may be compromised10,11. Well-designed local flaps avoid these limitations6.

Nasolabial and Rhomboid flap designs are chosen such that line of donor closure is placed along the line of maximal extensibility closure resulting in better distribution of tension. The participation of surrounding skin also reduces tension5,6. Less tension means improved chances of healing and less risk of distortion of adjacent anatomic architecture6. The “broken” geometric final scar appearance also makes it less noticeable6,12.  A recent meta-analysis comparison with primary closure, for sacrococcygeal pilonidal surgeries, showed rhomboid flaps resulted in a lower relative risk of dehiscence and wound infection13.

The presented case further highlights a successful reconstruction of a large 3 cm × 2 cm-sized cutaneous left nasal sidewall and ala defect. Primary closure was simply not an option given the local size of defect and potential distortion of key structures.  Skin graft would have left a permanent prominent, hypopigmented, depressed area at the recipient site.  

Our results are consistent with other reports in the literature that note the successful applicability of nasolabial and rhomboid flaps in almost all parts of the body. We believe for high safety, high patient satisfaction, and best cosmetic outcomes, rhomboid and other local flaps should be considered as a first-line reconstructive strategy for covering defects of various sizes and locations.

The nasolabial and rhomboid flap design is simple, flap elevation is quick, and no special instrumentation is required, making these techniques suitable even in a resource-limited environment.

This case details the operative technical aspects of evaluation of defect, flap design, flap markings, flap elevation, flap rotation, flap inset, and post-operative management to aid readers in utilizing this technique.  The final flap healed with excellent contour, texture, thickness, and color match.


No special instrumentation needed.


Nothing to disclose.

Statement of Consent

The patient referred to in this video article has given their informed consent to be filmed and is aware that information and images will be published online.


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  2. Aydin O.E., Tan O., Algan S., Kuduban S.D., Cinal H., Barin E.Z. Versatile use of rhomboid flaps for closure of skin defects. Eurasian J. Med. 2011; 43:1–8. 
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  12. Kang A.S., Kang K.S. Rhomboid flap: Indications, applications, techniques, and results. A comprehensive review, Ann Med Surg (Lond)., Volume 68,2021,102544
  13. Horwood J., Hanratty D., Chandran P., Billings P. Primary closure, or rhomboid excision and Limberg flap for the management of primary sacrococcygeal pilonidal disease? A meta-analysis of randomized controlled trials. Colorectal Dis. 2012; 14:143–151.