RT Book, Section A1 Philip, Susan S. A2 Papadakis, Maxine A. A2 McPhee, Stephen J. A2 Rabow, Michael W. SR Print(0) ID 1166175568 T1 Clinical Stages of Syphilis T2 Current Medical Diagnosis and Treatment 2020 YR 2020 FD 2020 PB McGraw-Hill Education PP New York, NY SN 9781260455281 LK accessmedicine.mhmedical.com/content.aspx?aid=1166175568 RD 2022/05/17 AB ESSENTIALS OF DIAGNOSISPainless ulcer on genitalia, perianal area, rectum, pharynx, tongue, lip, or elsewhere.Fluid expressed from ulcer contains T pallidum by immunofluorescence or darkfield microscopy.Nontender enlargement of regional lymph nodes.Serologic nontreponemal and treponemal tests may be positive.