Granulomatous Reaction to Dermal Injection of Growth Factors from Umbilical Cord Blood-Derived Mesenchymal Stem Cells: A Case Report

Use of stem cells to treat various diseases in dermatology has been of interest. Conditioned media with the growth factors secreted from stem cells has been used as a topical agent. We report a case of foreign body granulomas that appeared days after dermal injection of the conditioned media mimicking scars at all injection sites.