THURSDAY, June 20 (HealthDay News) — Errors in surgeons’ interpretation of histological slides are strongly associated with tumor recurrence after Mohs micrographic surgery (MMS), according to a study published in the July issue of the Journal of the American Academy of Dermatology.

Tracy Campbell, M.D., from Chicago Cosmetic Dermatology and Surgery, and colleagues examined the association between slide characteristics and surgeon error and tumor recurrence in 19 cases of cancer that recurred after MMS and 95 control cases that were treated with MMS without recurrence.

After controlling for various factors, the researchers found that surgeon error, tissue drop out, and aggressive tumor subtype were significant factors associated with tumor recurrence.

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“The results of our study suggest that surgeon interpretation errors, tissue drop out, and aggressive tumor type are the primary factors resulting in recurrences after MMS,” Campbell and colleagues conclude. “Two of these factors are within the control of the treating physician, and thus potentially improvable.”

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