Background: Nodular basal cell carcinoma (nBCC) is the most common cutaneous malignancy and studies assessing the use of topical imiquimod 5% cream as a monotherapy in the treatment of nBCC have resulted in less than optimal clearance rates.
Objective: This pilot study was designed to evaluate the efficacy of imiquimod 5% cream on nodular basal cell carcinoma lesions after initial treatment with curettage.
Methods: After obtaining informed consent, 17 nBCCs on 15 patients were included in this institutional review board-approved, open-label study with initial treatment using curettage without electrodesiccation followed by once-daily application of imiquimod 5% cream 5 times per week for 6 weeks. The area was excised and examined histologically 6 weeks after cessation of imiquimod cream.
Results: All 17 lesions (100%) showed no histologic evidence of residual tumor on the post-treatment excision. Local site reactions necessitating a rest period from medication application were experienced by most patients (67%), but the majority of patients stated that they would choose this treatment modality over excision if they developed a subsequent tumor.
Conclusion: Imiquimod 5% cream appears to be an effective treatment method for nodular basal cell carcinoma if combined with curettage prior to application.
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