Treatment and Outcomes for Cutaneous Periauricular Basal Cell Carcinoma: A 16-Year Institutional Experience.

[OBJECTIVE] To report a single institutional experience with the surgical management of cutaneous periauricular basal cell carcinoma.

[STUDY DESIGN] Retrospective chart review.

[SETTING] Tertiary academic center.

[METHODS] Retrospective chart review of 71 patients diagnosed with periauricular basal cell carcinoma managed surgically from 2000 to 2016. Data were analyzed with descriptive statistics.

[RESULTS] The median age at diagnosis was 73.0 years (interquartile range, 13.0). Of all lesions, 2.8% (n = 2) were preauricular, 80.3% (n = 57) auricular, and 16.9% (n=12) postauricular. Auricular subsites included conchal bowl (36.6%, n = 26), helix (21.1%, n = 15), antihelix (1.4%, n = 1), peritragus (5.6%, n = 4), triangular fossa (1.4%, n = 1), external auditory canal (2.8%, n = 2), and lobule skin (1.4%, n = 1). Surgical approach included wide local excision (80.3%, n = 57), partial auriculectomy (8.5%, n = 6), and total auriculectomy or other combinations of surgical methods (11.3%, n = 8). Due to aggressive pathology, 3 cases required concurrent parotidectomy, neck dissection, ear canal sleeve resection, or mastoidectomy. In sum, 52.1% (n = 37) of cases had clear margins on first pass in the operating room; 25.4% (n = 18) required further resection; and 12.7% (n = 9) demonstrated final positive/overturned margins read as negative from the frozen sections. Reconstruction included full-thickness (25.4%, n = 18) or superficial-thickness (29.6%, n = 21) skin grafts and local flap reconstruction (25.4%, n = 18), while 5.6% (n = 4) required combinations of free flap and/or other reconstruction techniques; 14.1% (n = 10) did not undergo formal reconstruction.

[CONCLUSION] Periauricular basal cell carcinoma occurs in anatomically diverse locations in and around the ear, and multiple surgical methods are required for successful treatment.