<prompt> In an adult male, on per rectal examination, the following structures can be felt anteriorly except:Internal iliac lymph nodesBulb of the penisProstateSeminal vesicle when enlarged  <response>: Internal iliac lymph nodes can be palpated laterally when they are enlarged not anteriorly Ref: Anatomy Workbook By Colin Hinrichsen, Peter Lisowski, 2007, Page 103 