The FP was concerned about a possible melanoma due to the dark pigmentation and the positive “ABDCE criteria” of melanoma. The FP used his dermatoscope to determine whether this was a melanoma or a pigmented basal cell carcinoma (BCC).
The multiple leaf-like structures and blue-gray ovoid nests seen with dermoscopy suggested that this was a pigmented BCC. (The ulceration could be seen in either melanoma or BCC.) The FP told the patient that this was most certainly a skin cancer and she needed a biopsy that day. The patient consented and anesthesia was obtained with 1% lidocaine and epinephrine. The physician used a DermaBlade to perform a deep shave (saucerization) under the pigmentation. (See the Watch & Learn video on “Shave biopsy.”)
The pathology confirmed pigmented BCC. The physician recommended an elliptical excision and scheduled it for the following week.
Photos and text for Photo Rounds Friday courtesy of Richard P. Usatine, MD. This case was adapted from: Karnes J, Usatine R. Basal cell carcinoma. In: Usatine R, Smith M, Mayeaux EJ, et al. Color Atlas of Family Medicine. 2nd ed. New York, NY: McGraw-Hill; 2013:989-998.
To learn more about the Color Atlas of Family Medicine, see: www.amazon.com/Color-Family-Medicine-Richard-Usatine/dp/0071769641/.
You can now get the second edition of the Color Atlas of Family Medicine as an app by clicking on this link: usatinemedia.com.