Abstract:Silica granulomas have been described on the skin and are rare; however, this is the first report of a sarcoid‐like granulomatous reaction because of siliceous diatom frustules in the subcutis, making this an unprecedented case. A 41‐year‐old female presented with a subcutaneous nodule on the right forearm clinically suggestive of cyst, foreign body, or lipoma. Excisional biopsy revealed subcutis with a sarcoid‐like granulomatous reaction in a background of fibrosis, containing abundant semitransparent, exquis… Show more
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