Secondary syphilis presenting as a palisading granuloma.
A diagnosis of secondary syphilis was made in a 37-year-old man who presented with a papular eruption and a penile ulceration. Skin biopsy revealed a palisading granuloma similar to that seen in granuloma annulare. This represents a histologic finding that has not been described for early secondary syphilis.
D000328:Adult; D001706:Biopsy; D006099:Granuloma / Q000209:etiology* / Q000473:pathology; D006801:Humans; D008297:Male; D010950:Plasma Cells / Q000473:pathology; D012867:Skin / Q000473:pathology; D012871:Skin Diseases / Q000209:etiology* / Q000473:pathology; D013587:Syphilis / Q000150:complications* / Q000473:pathology