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Background In September 2012, appropriate use criteria (AUC) for Mohs micrographic surgery (MMS) were released by a collaboration of dermatology organizations including the American College of Mohs Surgery. Objective The group sought to determine adherence to the Mohs AUC at the academic institution. Materials and methods The authors performed a retrospective chart review of all nonmelanoma skin cancers (NMSCs) treated within the University of Utah, Department of Dermatology, from January through March of 2012. They applied the Mohs AUC to analyze these cases. Results In total, the authors identified 724 patients and 1,026 cases of NMSCs, including 557 (54.3%) basal cell carcinomas and 469 (45.7%) squamous cell carcinomas. Of the 1,026 NMSCs, 350 (34.1%) were treated with MMS. Of these cases treated with MMS, there were 339 cases (96.9%) deemed appropriate, 4 (1.1%) uncertain, and 7 (2.0%) inappropriate per AUC. Also examined were 611 cases treated with modalities other than MMS, of which 60.7% would have met AUC for MMS. Conclusion In a 3-month review of all NMSC cases at the academic center, there is a low percentage of cases performed that are inappropriate for MMS by AUC. At the institution, there is a large percentage of NMSC that meet AUC but are treated by other modalities. The use is highly appropriate for MMS, and these data suggest possible underutilization of MMS for certain NMSCs. Further studies are required to determine the effectiveness of other treatment modalities for NMSC that meet Mohs AUC.

BACKGROUND Nonmelanoma skin cancer (NMSC) of the ear can result in large defects with significant morbidity. OBJECTIVE To determine whether subanatomic location of NMSCs, based on ease of visualization of the ear, correlated with post-Mohs micrographic surgery (MMS) defect size. METHODS A retrospective chart review of 142 post-MMS ear lesions was performed and categorized according to subanatomic location: the helix, antihelix, and tragus (Location 1); retroauricular (Location 2); and conchal bowl, scapha, and triangular fossa (Location 3). RESULTS The average defect sizes were 2.50 cm2 (Location 1), 5.76 cm2 (Location 2), and 4.03 cm2 (Location 3). Tumors in Location 1 were significantly smaller than those occurring in Location 2 (P