Related Experiment Video
Updated: Jun 21, 2026

Combining Reflectance Confocal Microscopy with Optical Coherence Tomography for Noninvasive Diagnosis of Skin Cancers via Image Acquisition
Published on: August 18, 2022
Co-existing basal cell carcinoma and blue nevus in an African-American woman
Jason Litak1, Daniel Behroozan, Scott Binder
1Department of Dermatology, Geffen School of Medicine, University of California, Los Angeles, CA, USA. j.litak@ucla.edu
Abstract:
A 67-year-old African-American woman presented with an enlarging darkly pigmented plaque on her scalp. Histopathologic examination revealed a basal cell carcinoma juxtaposed to a blue nevus. Interestingly, the most common types of cutaneous collision tumors include melanocytic nevus and basal cell carcinoma. Whether these combinations are simply because of chance or may have a pathophysiologic mechanism is contentious. This is the first documented case of a basal cell carcinoma co-existing alone with a blue nevus.
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