Treating High Stage cSCC: Better Results With Mohs Surgery vs Wide Local Excision, Study Finds

Supports Benefits of Mohs

Weighing in on the research, Thomas E. Rohrer, MD, a dermatologic surgeon in Chestnut Hill, Massachusetts, noted that this was an excellent study that demonstrates benefits of Mohs surgery over straight excision on essentially all outcomes investigated and measured.

“The data clearly shows that Mohs should be used whenever possible,” he said. “There are some patients and facilities that do not have access or timely access to Mohs, so they would likely proceed with standard wide local excision. Otherwise, if there is the capability to perform Mohs, it would be preferred,” he added.

“There is no benefit to a standard excision over Mohs,” Dr. Rohrer emphasized. “If a surgeon is not sure if they have attained clear margins, they could and often do take a little more tissue to be certain.”

Also asked to comment on the data, Chad L. Prather, MD, a dermatologist in Baton Rouge, Louisiana, said, “We know that Mohs has been used for cancers that are not highly staged and we know it’s better than WLE, but this study shows that it is beneficial for higher stage cancers.”

However, he cautioned that unlike early-stage cancers, where Mohs is usually a definitive treatment, with higher stage disease it is a starting point. “As a takeaway, Mohs is superior, but it needs to be followed through,” he said. “These patients need to be closely followed as they are at a high risk for recurrence and metastasis and may need to be worked up for lymph node involvement and need additional therapy going forward.”

Dr. Prather also pointed out that there are circumstances when WLE may be a more suitable treatment. “Mohs is not very good if there is bony involvement,” he said. “This most often happens when the lesion is on the scalp and has invaded the skull. WLE may still be the preferred choice.”

Additionally, Mohs is not the best choice if the tumor is broken into multiple segments. “In these cases, WLE may be preferred,” Dr. Prather added. “But overall, Mohs is one of the best tools we have, and it stands to reason that it works well for high-risk tumors, as this study shows.”

The study was independently supported. Dr. Wang reported no relevant financial relationships. Dr. Rohrer and Dr. Prather had no relevant disclosures.

A version of this article appeared on Medscape.com.