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False-Negative Tumor-Free Margins Following Mohs Surgery for Aggressive Trichoblastoma

Mollet, Pablo Umbert MD; Muñoz, Javier Forteza MD

The American Journal of Dermatopathology: May 2012 - Volume 34 - Issue 3 - p 255–258
doi: 10.1097/DAD.0b013e318213f80d
Original Study

Abstract: Trichoblastoma (TB) is an infrequent, generally benign neoplasm arising from the germinative hair bulb with induction of mesenchymal stroma and with no adverse outcomes such as relapses, metastasis, or death. We report 2 cases of false-negative tumor-free margins after Mohs micrographic surgery (MMS) for aggressive TB.

*Dermatology Department, Sagrado Corazon Hospital, University of Barcelona, Barcelona, Spain

Pablo Umbert Institute, Corachan Clinic, Barcelona, Spain.

The authors have no funding or conflicts of interest to disclose.

Reprints: Pablo Umbert Millet, MD, Dermatology Department, Sagrado Corazon Hospital, University of Barcelona, Paris, 83-85, 08029 Barcelona, Spain (e-mail:

Copyright © 2012 Wolters Kluwer Health, Inc. All rights reserved.