OHSU Dermatologists Set World Record for Detecting the Smallest Skin Cancer
Oregon Health & Science University (OHSU) dermatologists have achieved a groundbreaking milestone by diagnosing the world’s smallest skin cancer. A melanoma measuring just 0.65 millimeters. This achievement, officially recognized by Guinness World Records, underscores the vital role of early detection and innovative technology in the fight against skin cancer.
The tiny lesion was found on the cheek of Christy Staats, who had originally visited OHSU concerned about a different spot on her face. Dr. Alexander Witkowski, assistant professor of dermatology at OHSU, initially determined that the spot of concern was benign. However, during his examination, he noticed a nearby microscopic lesion that prompted further investigation. Using a combination of dermoscopy and Reflectance Confocal Microscopy (RCM), a non-invasive imaging technique, Witkowski identified suspicious cells indicative of melanoma. This cutting-edge imaging allowed doctors to view skin cells in real-time without cutting into the skin.
Following a physical biopsy and confirmatory pathology and molecular testing, the lesion was diagnosed as melanoma in situ, a very early-stage melanoma confined to the top layer of the skin. Witkowski and his team, including Drs. Joanna Ludzik, Jina Chung, Sancy Leachman, and Claudia Lee, collaborated to validate the diagnosis. This early detection was celebrated as a Guinness World Record, emphasizing both technological advancement and clinical teamwork.
Internationally renowned dermatology expert Dr. Giovanni Pellacani, who mentored both Witkowski and Ludzik in Europe, also reviewed the case, lending further credibility. Their work highlights how expert training, the right technology, and close attention to patient concerns can lead to extraordinary results.
Staats expressed deep gratitude for the early diagnosis. She credited her decision to revisit a dermatologist, trust her instincts, and the availability of advanced technology at OHSU for potentially saving her life. She hopes her story inspires others to stay vigilant about skin health and push for early screenings.
Melanoma, though accounting for only about 1% of all skin cancers, causes the majority of skin cancer deaths. In 2023, approximately 97,610 new cases are expected in the U.S. Dr. Leachman, director of the OHSU Knight Cancer Institute’s Melanoma Program, highlighted how this case showcases the power of investment in cancer detection technologies. The confocal imaging device used was acquired thanks to the $1 billion Knight Cancer Challenge campaign.
The OHSU team is using this achievement to promote skin cancer awareness. As part of Melanoma Awareness Month in May, they have launched a public health initiative called “Start Seeing Melanoma.” This campaign teaches the public how to check their skin and recognize early warning signs of melanoma.
Key awareness events include “Oregon Check Your Skin Day” on May 18 and the “Steps Against Melanoma” walks on May 21, organized in partnership with AIM at Melanoma across multiple Oregon cities.
OHSU’s historic detection exemplifies how early screening, empowered by new technology and teamwork, can catch cancer before it spreads — potentially saving countless lives.
