A case of Bednar tumor recurring after 23 years
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Updated: Nov 3, 2026

04:34
Surgical Treatment of an Endolymphatic Sac Tumor
Published on: May 26, 2023
Y Mochizuki1, Y Narisawa, H Kohda
1Department of Internal Medicine, Saga Medical School, Japan.
The Journal of Dermatology
|September 1, 1996
Abstract:
We reported a patient with a Bednar tumor who developed local recurrence 23 years later. The recurrent Bednar tumor showed the histopathological features dermatofibrosarcoma protuberans (DFSP), and expressed CD34. We favor the term "Bednar tumor" rather than pigmented DFSP and consider that Bednar tumor is an intermediate type between cellular blue nevus and DFSP.