The FP recognized that this could be a wart but was concerned that it might be a squamous cell carcinoma (SCC) related to HPV and sun exposure.
He performed a shave biopsy and the pathology report indicated it was an SCC in situ. (See the Watch & Learn video on “Shave biopsy.”) At the follow-up visit, the FP reviewed the patient’s treatment options, which included topical 5% fluorouracil, topical imiquimod, and surgical excision. He also explained that the topical treatments were off label, so these options might have a lower success rate than the surgery.
The patient chose to have the surgery, even though he’d be out of work while the excision site was healing. The FP provided counseling about sun avoidance, the consistent use of a hat outdoors, and the use of sunscreens when exposed to the sun. He also referred the patient to a dermatologist who had extensive experience doing skin cancer surgery.
Photos and text for Photo Rounds Friday courtesy of Richard P. Usatine, MD. This case was adapted from: Karnes J, Usatine R. Squamous cell carcinoma. In: Usatine R, Smith M, Mayeaux EJ, et al. Color Atlas of Family Medicine. 2nd ed. New York, NY: McGraw-Hill; 2013:999-1007.
To learn more about the Color Atlas of Family Medicine, see: www.amazon.com/Color-Family-Medicine-Richard-Usatine/dp/0071769641/.
The new third edition will be available in January 2019: https://www.amazon.com/Color-Atlas-Synopsis-Family-Medicine/dp/1259862046/.
You can also get the second edition of the Color Atlas of Family Medicine as an app by clicking on this link: usatinemedia.com.