Which histologic findings are characteristic of micronodular basal cell carcinoma?

Updated: Mar 23, 2021
  • Author: Robert S Bader, MD; Chief Editor: William D James, MD  more...
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Another aggressive variant, micronodular BCC, appears as small, nodular aggregates of basaloid cells. See the image below.

Micronodular basal cell carcinoma often has an abs Micronodular basal cell carcinoma often has an absence of retraction artifact. The characteristic histology is small size and uniformity of the tumor nodules. Courtesy of Shang I Brian Jiang, MD.

Retraction artifact tends to be less pronounced than in the nodular form of BCC, and subclinical involvement is often significant. Micronodular basal cell carcinoma is similar to the noduloulcerative type, although the tumor islands are small (often < 15 cells in diameter).

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