View source for Chancre

{{Infobox_Disease |
  Name           = {{PAGENAME}} |
  Image          = Penis syphilis.png|
  Caption        = Chancres on the penis due to a primary syphilitic infection|
  DiseasesDB     = |
  ICD10          = |
  ICD9           = |
  ICDO           = |
  OMIM           = |
  MedlinePlus    = |
  eMedicineSubj  = |
  eMedicineTopic = |
  MeshID         = |
}}
{{Search infobox}}
{{CMG}}



A '''chancre''' is a painless ulceration formed during the primary stage of [[syphilis]]. This infectious lesion forms approximately 21 days after the initial exposure to [[Treponema pallidum]], the [[gram-negative]] [[spirochaete]] [[bacterium]] yielding [[syphilis]]. Chancres transmit the sexually transmissible disease of [[syphilis]] through direct physical contact. These ulcers usually form on or around the [[anus]], [[mouth]], [[penis]], and [[vagina]]. Chancres may diminish between three to six weeks without the application of medication. <ref>Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:77 ISBN 1591032016</ref> <ref>Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:68 ISBN 140510368X</ref>

In addition, chancres are associated with the [[sleeping sickness]], [[African trypanosomiasis]], subsequent to the bite of a tsetse fly. 

==Pathological Findings==

<div align="left">
<gallery heights="125" widths="125">
Image:Penis syphilis.png|Chancres (shang-ker) on the penis due to a primary syphilitic infection.
Image:Chancre (Syphilis, painless).jpg|Chancre, [[Syphilis]], painless
</gallery>
</div>

==References==
{{Reflist|2}}




{{WikiDoc Help Menu}}
{{WikiDoc Sources}}
[[nl:sjanker]]
[[de:Ulcus durum]]

[[Category:Symptoms]]
[[Category:Signs and symptoms]]